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5 sen coin

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Five Sen
Japan
Value+1⁄20Japanese Yen
Mass(1870–1871) 1.25 g,
(1873–1880) 1.35 g,
(1889–1906) 4.67 g,
(1917–1920) 4.28 g,
(1920–1923) 2.63 g,
(1932–1945)variousg
Diameter(1870–1871) 15.5 mm,
(1873–1880) 15.2 mm,
(1889–1920) 20.6 mm,
(1920–1923) 19.1 mm,
(1932–1945)variousmm
ShapeCircular
CompositionSeveral different metals
Years of minting1870–1946
Obverse
DesignVarious, depending on year.
Reverse
DesignVarious, depending on year.

The5 sen coin(Ngũ 銭 ngạnh hóa)was a Japanese coin worth one twentieth of aJapanese yen,as 100senequalled 1 yen.[1]These coins were minted from the late 19th century until the end ofWorld War II.Like the other denominations of sen, these coins were eventually taken out of circulation at the end of 1953.[2]While not in circulation any more, these coins are bought and sold bynumismatistsfor academic study, and by those with ahobby.

History

[edit]

Meiji coinage (1870–1906)

[edit]
Five sen coins were first struck in 1870 at the Osaka mint (façade pictured).

Five sen coins were first struck towards the end of 1870 from a newly established mint inOsaka.[3][4]They were then held at the mint until the following year of issuance when they circulated alongside newly minted 1871 (year 4) dated coins.[5]Five sen coins along with twelve other denominations were adopted by theMeijigovernment in an act signed on June 27, 1871.[6]This new coinage gave Japan a western style decimal system based on units ofyen,which were broken down into subsidiary currency of sen, and rin.[7][8]Five sen coins dated 1870 and 1871 (year 3 and 4 of Meiji) were initially authorized to be struck in.800 silver, weighs 19.3 grains (1.25g), and has a 15.5mm diameter (0.61 in).[9][10]The first design used is calledrising sun dragon(Húc nhật long,Asahi Ryu),which had its features engraved by a commission of Japanese artists.[11]On the reverse side there is a paulownia decoration with asunburstin the center along with thechrysanthemum sealup on top. This first dragon design turned out to be problematic as the thin small size of the coin meant that the dragon's features could not be fully struck.[5]An amendment to the currency act (Daijo-kan Declaration No. 74) was adopted in March 1872, which changed the dragon to a simple "Ngũ 銭" (5 sen) design.[12]No changes were made to the weight or size of these coins when they were issued in 1872 (year 5) bearing the date from the prior year.[13]

In early 1873 (year 6), the currency act was amended again giving five sen coins a third design. The weight of the coin was raised from 19.3 to 20.8 grains (1.35g) as the face value of the former coins were not proportional to the1 yen coin.[13]Five sen coins were also reduced in size from 15.5 to 15.2mm, this decision was unpopular as they were hard to use in commerce.[14][15][a]The dragon was restored to the obverse side of the coin as technical improvements from new British coin presses made a clear design.[16]Latin scriptreading "5 Sen" was introduced below the dragon for internationalization and foreigners.[10][15]The reverse side of the coin received a newpaulownia wreathdecoration, and the sunburst was replaced by the value written in Kanji. Production of the silver 5 sen coin continued until 1880 with the latter three years being dated 1877 (year 10).[16][17][18]During their final year a few coins were struck inproofdated 1880 (year 13) for exclusive use in presentation sets.[19]These coins were ultimately discontinued for circulation as their unpopular small size had caused them to become inconvenient.[16]Five sen silver coins were later struck in 1892 (year 25) to have non circulating examples to display at theWorld's Columbian Exposition.[20]

The Japanese government promulgated the "Additional Corrections to the Currency Regulations" (Royal Order No. 74) in November 1888 (year 21), and a newcoin pattern was adopted.Cupronickelwas chosen as a replacement for silver as Japan had an excess supply of copper at the time. As the coins lost their silver value, they were grouped with bronze coins which were only redeemable for up to a yen.[16][21]This coin is noteworthy for being the first made by Japanese engineers using technology licensed from theUnited Kingdom.[21]Five sen coins with the fourth design feature a large chrysanthemum seal on the obverse, and a large ngũ (5) on the reverse. These coins are heavier and larger than their silver predecessors weighing 72 grains (4.67g) with a width of 20.6mm.[7][22]Although production began in 1889 (year 22), the simple design of the coin made them a target of counterfeiters.[7][22]These coins were only produced for 8 years as their fake counterparts eventually became "rampant".[22][23]

When the Japanese government went onto thegold standardin 1897 a new monetary law was enacted. The design of the 5 sen coin was made more elaborate with a rice wreath on the obverse, and a sunburst on the reverse.[24]This fifth and last design of theMeiji erawould be the last time "5 Sen" was spelled out in Latin numerals. There were virtually no changes made to the size or weight of the coins which circulated concurrently with those of the older design.[22][23][24]Five sen coins with the rice wreath design were produced for circulation until 1905 (year 38). While coins were struck the following year, none were released for circulation.[25]The final 5 sen design used during the Meji era was noted for causing public confusion as it was similar to the concurrently circulating20 sendesign. The cupronickel bullion used was also too cheap for the coin's face value, and despite the design change was easy to forge.[26][27]Five sen coins were "practically wholly" withdrawn from circulation in the years that followed as cash currency became used for only petty transactions.[28]

Taishō coinage (1917–1923)

[edit]

Five sen coins were re-established in 1916 when the 1897 monetary law was revised. Under Imperial ordinance 35 of March 30, 1916 a central hole of 4.2mm was specified for the coppernickel coins.[29]This measure reduced production costs, avoided any future 20 sen coin confusion, and was a deterrent to counterfeiters.[26][27]While there was no change in the 20.6mm width which had been used since 1889, the weight was reduced from 4.67 to 4.28 grams.[27][30]At least two differentcoin patternswere struck before a final design was finalized.[31][32]The chosen design features achrysanthemum seal,and a bouquet of paulownia flowers on the obverse, while the reverse side usesQinghai waves.[27]Production began the following year with coins dated 1917 (year 6 of Taishō's reign). Inflation caused byWorld War Iat the time had led to an overall shortage of subsidiary coins. Silver coins were suspended during this time as the alloy price continued to rise and then settle after the war.[27][33]The Japanese government eventually decided to issue a coppernickelten sen cointo save on costs. An issue arose as the size and design of the five sen coin was now virtually the same as the ten sen coin.[22][33][34]Focus was given on size rather than design as the two denominations needed to be balanced in proportion to their face value. Five sen coins were thus reduced in size from 20.6 to 19.09mm, the weight dropped from 4.28 to 2.63 grams, the central hole shrunk, and the coins became thinner.[35][36]When these coins were produced for the first time in 1920 (year 9), the redeemable limit was raised from 1 to5 yen.[37]Five sen coins were eventually suspended at the end of 1923 (year 12) as large amounts of ten sen coins and small denomination banknotes were circulating by this time.[33]

Shōwa coinage (1932–1946)

[edit]
The mythical golden kite (image on right withEmperor Jimmu) is featured on two Shōwa era five sen designs.

The suspension of five sen coins outlastedEmperor Taishōand continued until 1932 (year 7 ofShōwa). Five sen coins were produced again due to theMukden Incidentand subsequentJapanese invasion of Manchuria.[33]These events caused a shortage in coins as the demand for military supplies led to a booming economy. Amendments were made in June 1932 regarding the coinage law, and were put into effect on July 1.[38]Copper-nickelcoins from the Taishō era were brought back into production before the alloy and design were changed due to wartime conditions.[33]The 1897 coinage act was amended for a final time in 1933 (year 8) to implement these changes. The width of the coin dropped slightly by 0.1mm to 19mm, and the weight was increased from 2.63 to 2.80 grams. Input was solicited from the general public in order to base a pattern design for these coins.[39][40]The obverse features the chrysanthemum seal up on top with akitebird below, while the reverse features eightmagatama.Using a kite bird is symbolic here, as allegedlyEmperor Jimmuused it to defeat his enemies in battle.[39]Nickel was chosen for an alloy as countries at the time including Japan were stockpiling it in preparation for war.[39][41][42]These pure nickel coins substituted the old copper-nickel coins starting on April 1, 1933.[43]Production continued for another four years before theSecond Sino-Japanese Warbroke out with theMarco Polo Bridge Incidentin July 1937. This event left an impact on how five sen coins were made for the rest of the series.

TheNational Mobilization Lawwas legislated in theDiet of JapanbyPrime MinisterFumimaro Konoeon March 24, 1938 to prepare the country for war. This action led to the promulgation of the "Temporary Currency Law" which came into effect on June 1, 1938.[44][45]It now became possible to change the material and purity of money without a resolution from theImperial Diet.[44]Analuminium bronzealloy consisting of 95% copper and 5% aluminium replaced the nickel coins as the latter was needed for munitions.[44][45]Although nickel coins were produced dated 1938 (year 13), these were not distributed by the Bank of Japan. Almost the entire ten million mintage was re-melted to be used for the war effort per the newly established law.[46][47]The weight and size of five sen coins did not change when the alloy was switched.[44]Changes made included a new design again solicited from the general public, and a smaller central hole.[44]The design chosen features on the obverse a chrysanthemum seal up on top with the paulownia below, while the reverse has cherry blossom halves flanking both sides. These coins were only produced for two years before an increased wartime demand for copper caused an alloy change. Five sen coins were switched to a pure aluminum alloy on July 19, 1940 (year 15) by Royal Decree No. 476.[48]The size of the coins remained the same while the light aluminum alloy cut the weight of the coins by more than half from 2.80 to 1.20 grams. These coins feature a chrysanthemum seal on the obverse, and the mythical kite bird on the reverse (revised design from before).[49]

As the war situation grew worse the demand for aluminum rose as the metal was needed for aircraft. The weight of five sen coins was lowered from 1.2 to 1 gram on August 27, 1941 by Royal Decree No. 826.[50]Five sen coins by this time were valued at anAmerican pennybefore the United States imposed an embargo.[45]ThePacific Warbegan a little more than three months later which caused supplies to travel long distances. More aluminum was taken out of five sen coins on February 5, 1943 by Royal Decree No. 60. This action lowered the weight of the coin further from 1 to 0.80 grams as the metal became difficult to obtain.[51][52]The production of aluminum five sen coins stopped at the end of 1943 (year 18) as the shortage of supplies became extremely severe.[49]Another alloy was sought for coinage, andtinwas chosen as the material was relatively easy to obtain from occupied territories in Southeast Asia.[49]Five sen coins using this alloy were enacted on March 8, 1944 by Royal Decree No. 388.[53]The decision was not made lightly as Tin was a strategic material which is unsuitable for monetary purposes as the metal is soft.[54]Five sen coins were reduced in size from 19 to 17mm, the weight was increased from 0.80 to 1.95 grams, and a central 4mm hole was added. The design for these coins simply feature a chrysanthemum seal and paulownia on the obverse, and inscriptions on the back.[55]Production started for a brief time before being discontinued due toalliedair superiority and control over the seas.[54][56]Five sen noteswere ultimately issued to bridge the gap as materials could no longer be secured for coins.[55]Unissuedporcelainfive sen pieces were also made, but weremostly destroyedwhenWorld War IIended.[55][56]

Five sen coins were brought back into production by theJapan Mintin September 1945. The initial plan was to use the design featured on the previous five sen aluminum coins. These coins were never released, and all of them were melted as permission was not granted by theSupreme Commander for the Allied Powers.[57]Criticism fell upon the prewar design, and how the country's name read "Đại nhật bổn"(Dai Nippon,Japanese Empire)on the coins. The solution was to redesign the coin entirely and replace the name with "Nhật bổn chính phủ"(Nippon-koku,Government of Japan).[58][59]Tin was chosen again for an alloy as aluminum was below the coin'sface value.[60]These final five sen coins are the same 17mm size as their predecessors, but weigh an even 2 grams (up from 1.95). The design features a chrysanthemum seal with adove(symbol ofpeace) on the obverse, while the reverse has a large Latin numeral "5".[60][57]Issuance came on January 26, 1946 by royal order after the coins were approved.[61]These coins continued to be produced until supplies ran out sometime in 1946 (year 21).[57]Five sen coins were eventually demonetized at the end of 1953 when the Japanese government passed a law abolishing subsidiary coinage in favor of the yen.[2]Currencies of less than one yen were rarely used by this time due to excessive post-war inflation.[62]

Composition

[edit]
Years Material
1870–1880[14][63] 80%silver,20%copper
1889–1932[22][34] 75% copper, 25%nickel
1933–1938[42][34] 100% nickel
1938–1940[64][34] 95% copper, 5%aluminium
1940–1943[52][34] 100% aluminium
1944[56][34] 93%tin,7%zinc
1945–1946[60][34] 93% tin, 7% zinc

Circulation figures

[edit]

Meiji

[edit]
5 sen coin from 1870 (year 3)
Design 1 - (1870–1871)
5 sen coin from 1871 (year 4)
Design 2 - (1871)
5 sen coin from 1873 (year 6)
Design 3 - (1873–1880), (1892)[b]
5 sen coin from 1889 (year 22)
Design 4 - (1889–1897)
5 sen coin from 1897 (year 30)
Design 5 - (1897–1906)

The following are circulation figures for five sen coins that were minted between the 3rd and 39th years ofEmperor Meiji's reign. The dates all begin with the kanji charactersMinh trị(Meiji), followed by the year of his reign the coin was minted. Each coin is read clockwise from right to left, so in the example used below "Tứ thập nhị" would read as "year 24" or 1891.

  • "Year" ← "Number representing year of reign" ← "Emperor's name" (Ex: Niên ← tứ thập nhị ← trị minh )
Year of reign Japanese date Gregorian date Mintage[34]
3rd Tam 1870[c] 1,501,473[65]
4th Tứ 1871(First design)
4th Tứ 1871(Second design) 1,665,613[66]
6th Lục 1873[d] 5,593,172[14]
7th Thất 1874 7,806,493[14]
8th Bát 1875[d] 6,396,784[14]
9th Cửu 1876[d] 5,546,424[14]
10th Thập 1877[d] 22,024,167[14]
13th Tam thập 1880 79[e]
22nd Nhị thập nhị 1889 28,841,944[67]
23rd Tam thập nhị 1890 39,258,103[67]
24th Tứ thập nhị 1891 15,924,782[67]
25th Ngũ thập nhị 1892(Silver) Not circulated[b]
25th Ngũ thập nhị 1892(Copper-Nickel) 9,510,289[67]
26th Lục thập nhị 1893 8,531,858[67]
27th Thất thập nhị 1894 14,680,000[67]
28th Bát thập nhị 1895 1,030,000[67]
29th Cửu thập nhị 1896 5,119,988[67]
30th Thập tam 1897(Fourth design) 7,857,669[67]
30th Thập tam 1897(Fifth design) 4,167,020[67]
31st Nhất thập tam 1898 18,197,271[68]
32nd Nhị thập tam 1899 10,658,052[68]
33rd Tam thập tam 1900 2,426,632[68]
34th Tứ thập tam 1901 7,124,824
35th Ngũ thập tam 1902 24,478,544
36th Lục thập tam 1903 372,000
37th Thất thập tam 1904 1,628,000
38th Bát thập tam 1905 6,000,000
39th Cửu thập tam 1906 Not circulated[25]

Taishō

[edit]
5 sen coin from 1917 (year 6)

The following are circulation figures for five sen coins that were minted between the 6th and 12th year ofEmperor Taishō's reign. The dates all begin with the kanji charactersĐại chính(Taishō), followed by the year of his reign the coin was minted. Each coin is read clockwise from right to left, so in the example used below "Nhị thập" would read as "year 12" or 1923.

  • "Year" ← "Number representing year of reign" ← "Emperor's name" (Ex: Niên ← nhị thập ← chính đại )
Year of reign Japanese date Gregorian date Mintage[34]
6th Lục 1917 6,781,830
7th Thất 1918 9,131,201
8th Bát 1919 44,980,633
9th Cửu 1920 21,906,326
9th Cửu 1920(Reduced size) 100,455,537
10th Thập 1921 133,020,000
11th Nhất thập 1922 163,980,000
12th Nhị thập 1923 80,000,000

Shōwa

[edit]

The following are circulation figures for five sen coins that were minted between the 7th and 21st years of EmperorShōwa's reign. The dates all begin with the Japanese kanji charactersChiêu hòa(Shōwa), followed by the year of his reign the coin was minted. Each coin is read clockwise from right to left, so in the example used below "Nhị thập" would read as "year 12" or 1937. Some of the mintages included cover more than one coin variety for a given year.Coin patternsthat include examples struck on porcelain are not included here as they were never issued for circulation.

  • "Year" ← "Number representing year of reign" ← "Emperors name" (Ex: Niên ← nhị thập ← hòa chiêu )
Year of reign Japanese date Gregorian date Mintage[34]
7th Thất 1932(Copper-nickel) 8,000,394
8th Bát 1933(Nickel) 16,150,808
9th Cửu 1934 33,851,607
10th Thập 1935 13,680,677
11th Nhất thập 1936 36,321,796
12th Nhị thập 1937 44,402,201
13th Tam thập 1938 TY1(Nickel) 10,000,000[f]
13th Tam thập 1938 TY2(Bronze) 90,001,977
14th Tứ thập 1939 97,903,873
15th Ngũ thập 1940 TY1(Bronze) 34,501,216
15th Ngũ thập 1940 TY2(Aluminium) 167,638,000
16th Lục thập 1941 242,361,000
16th Lục thập 1941(Reduced Weight) 478,023,877
17th Thất thập 1942
18th Bát thập 1943 276,493,742
19th Cửu thập 1944(Tin) 70,000,000
20th Thập nhị 1945 180,000,000
21st Nhất thập nhị 1946

Shōwa era designs

[edit]

Six different designs were used during the Shōwa era for the 5 sen coin, not includingpattern coinswhich were never intended for circulation. As the weight and sizes were changed frequently after 1940, these designs have been listed separate with their respective information.

Image Minted Diameter Mass Comments
1932
(Year 7) 		19.1mm 2.63 g This is a one year type design similar to Taishō era coins.
(Small sized Taishō coin pictured)
1933-1937
(Year 8-12) 		19.0mm 2.80 g Only four 1938 dated nickel coins are known to exist.[69]
1938-1940
(Year 13-15) 		19.0mm 2.80 g The alloy was changed in 1938 toAluminium bronze.
1940-1941
(Year 15-16) 		19.0mm 1.20 g[70] The alloy was changed in 1940 toAluminium.
1941-1942
(Year 16-17) 		19.0mm 1.00 g[70] Reduced weight, both years have a combined mintage total.
1943
(Year 18) 		19.0mm 0.80 g[70] Reduced weight.
1944
(Year 19) 		17.0mm 1.95 g Reduced size, alloy changed to Tin/Zinc.
1945-1946
(Year 20-21) 		17.0mm 2.00 g Final issue of the series.

Collecting

[edit]

The value of any given coin is determined by survivability rate andconditionas collectors in general preferuncleanedappealing coins. For this denomination there are many major varieties and design changes which occurred during three different imperial eras. The first coins struck in 1870 are grouped into two different types due to the details not striking up properly. Early strikes show shallow/unclear details in the scales on the dragon, while later strikes show deep/clear scales.[71]The next design (dated 1871) has a similar issue as the varieties are also broken down into early and late strikes. Early strikes feature 53 rays in the sunburst on the reverse which is surrounded by 65 beads. Late strikes on the other hand have 66 rays and 79 beads with an altered foliage design in the wreath.[70]These first two designs are opposing in terms of higher value, as late strike deep/clear scales, and early strike 53 rays/65 beads are worth the most.[72]Both of these designs are considered to be scare overall as their low mintage totals left a small number of surviving coins.[5][13]The next grouping of coins are those with the third design minted between 1873 and 1877. Every year with the exception of 1874 is broken up into major varieties, those in 1876 have obverse/reverse combinations:

Year of reign Japanese date Gregorian date Rarity[70] Description
6th Lục 1873 More common Type 1:Character minh in Meiji's name "separated".[70]
Scarce Type 2:Character minh in Meiji's name "joined/connected" by an extra stroke.[70]
8th Bát 1875 More common Type 3:Character sen (銭) with a "pointed" stroke.[70]
Scarce Type 4:Character sen (銭) with a "blunt" stroke.[70]
9th Cửu 1876 More common Character minh in Meiji's name "separated" /sen (銭) with a "pointed" stroke.[70]
Scarce Character minh in Meiji's name "separated" /sen (銭) with a "blunt" stroke.[70]
More common Character minh in Meiji's name "joined/connected" /sen (銭) with a "pointed" stroke.[70]
Rarest (Y9)[g] Character minh in Meiji's name "joined/connected" /sen (銭) with a "blunt" stroke.[70]
10th Thập 1877 More common[14] Type 1:Character minh in Meiji's name "separated".[70]
Scarce[14] Type 2:Character minh in Meiji's name "separated" with horizontal stroke missing.[70]

The last two silver five sen coins dated 1880 (year 13), and 1892 (year 25) were never intended for circulation. 1880 (year 13) dated coins have an estimated survival of 10 to 12 pieces out of the 79 originally minted.[19]An example inVF20condition sold for $22,000 (USD) in 2011.[19][73]Coins dated 1880 are described as not "feasibly collectable" given their extreme rarity.[70]Those struck in 1892 for theWorld's Columbian Expositionare possibly confined to a single surviving example.[20]

The next design was issued from 1889 to 1897 and is considered to be pretty common with the exception of the lower mintage dates. Five sen coins dated 1895 (year 28) are seen as a key date, while those from 1896 and 1897 (year 29 and 30) are semi keys.[21][72]Rice wreath coins made from 1897 to 1906 were the final design issued during the Meiji era. Coins with this design are valued on average at 1000 yen or more due to low mintage amounts.[24]Five sen coins dated 1903 (year 36) are considered to be rare with a recorded mintage of 372,000 made. Prices for this particular date start in the tens of thousands of yen for coins in average condition.[71][72]WhenEmperor Meijidied in 1912, his son was enthroned asEmperor Taishō.Only one coin design was produced during this era which is broken up into the two size groups. Large type five sen coins issued from 1917 to 1920 are generally more scarce than their later smaller counterparts. Coin exchanges at banks in 1920 (large for small) led to a smaller amount of surviving large size coins.[27]Key dates in the large coin type series are those dated 1917 and 1918 (Taishō year 6 and 7).[74]Small sized five sen coins made between 1920 and 1923 were produced in larger amounts making them more commonly found.[72]

The small sized copper-nickel holed design carried over to EmperorShōwain 1932 (Shōwa year 7) with 8 million coins produced.[33][72]These are only valued a bit more than previous era coins due to a large amount of surviving examples.[33]Coins made during the Shōwa era after 1932 are inexpensive due to the large amount of surviving examples. Pure nickel coins struck from 1933 to 1937 are rarely seen in worn condition due to the short distribution period and quality of the metal.[39]Many coins were kept from the next design (1938 to 1940) as their distribution period only lasted for three years.[44]Aluminium and Tin based coins produced from 1940 to 1946 were largely kept by the public as they later became useless due to severe inflation.[49][55][57]

Notes

[edit]
  1. ^Some older sources give a 0.56 inch diameter which places the coin at 14.2mm.[9][10]
  2. ^ab1892 dated silver coins with the 3rd dragon design were never intended for circulation as they were made for theWorld's Columbian Expositionas exhibits.[20]
  3. ^Two varieties were made in 1870 in regards to the depth of the dragon's scales. The mintage figure shown is for the "shallow scales" variety, it is unknown how many were made for the "deep scales" coin.
  4. ^abcdThe mintage totalincludes all typesfor this year.
  5. ^Not intended for circulation.[19][14]
  6. ^Almost the entire mintage of 1938 nickel alloy coins were melted.[69]
  7. ^Rarest of the 1876 variety grouping.

References

[edit]
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  6. ^A. Piatt Andrew,Quarterly Journal of Economics,"The End of the Mexican Dollar", 18:3:321–356, 1904, p. 345
  7. ^abc"Brief History of Coinage Laws Since 1871".Annual Report of the Director of the United States Mint.United States Department of the Treasury.1899. pp. 345–346.
  8. ^Wm. Crosby and H. P. Nicholes (1873)."Coinage at Home and Abroad".The Bankers' Magazine, and Statistical Register.Vol. 27. p. 983.
  9. ^ab"The Japan Daily Mail".1874. p. 71 & 745.
  10. ^abcMonetary System of Japan.United States Congressional Serial Set. Vol. 1738. U.S. Government Printing Office. 1877. p. 298.
  11. ^"Húc nhật long thập 銭 ngân hóa".Pepper's Square(in Japanese).RetrievedDecember 7,2020.
  12. ^100 Years of Mint (Material).Ministry of Finance. 1971. p. 14.
  13. ^abc"Đại tự ngũ 銭 ngân hóa".Pepper's Square(in Japanese).RetrievedNovember 21,2020.
  14. ^abcdefghij"Japan 5 Sen Yr.10(1877)-Yr.9(1876)".Numismatic Guaranty Corporation.RetrievedApril 7,2017.
  15. ^ab"Long ngũ 銭 ngân hóa".Pepper's Square(in Japanese).RetrievedNovember 21,2020.
  16. ^abcdMeiji Financial History Compilation Society (1905).""Meiji Financial History (Volume 11) Currency"".Meiji Financial History Publishing Office. pp. 449–451, 478–497, 532–534.
  17. ^Edward Reed(2012)."The City of Osaka".Japan: Its History, Traditions, and Religions (With the Narrative of a Visit in 1879).Cambridge University Press. p. 154.ISBN9781108045698.
  18. ^Isabella Bird(1880)."The Public Mints".Unbeaten Tracks in Japan: An Account of Travels in the Interior Including Visits to the Aborigines of Yezo and the Shrines of Nikkô and Isé.J. Murray. p. 321.
  19. ^abcd"Meiji silver 5 Sen Meiji 13 (1880)".Heritage Auctions.RetrievedNovember 21,2020.
  20. ^abc"Meiji silver 5 Sen Year 25 (1892)".Heritage Auctions.RetrievedNovember 21,2020.
  21. ^abc"Phát hành の kinh vĩ".Pepper's Square(in Japanese).RetrievedNovember 22,2020.
  22. ^abcdef"5銭 bạch đồng hóa"(in Japanese). www.buntetsu.net.RetrievedApril 7,2017.
  23. ^ab"The Gold Standard in Japan".The Economist.Vol. 55. Economist Newspaper Limited. 1897. pp. 603–604.
  24. ^abc"Đạo ngũ 銭 bạch đồng hóa".Pepper's Square(in Japanese).RetrievedNovember 22,2020.
  25. ^ab"5 Sen, Japan, 1906".American Museum of Natural History.RetrievedNovember 22,2020.
  26. ^abThe Japan Chronicle: Weekly Edition.1917. p. 337.The new nickel coin will also preclude possible confusion in handling 20-sen and 5-sen pieces
  27. ^abcdef"Phát hành の kinh vĩ (1917)".Pepper's Square(in Japanese).RetrievedNovember 22,2020.
  28. ^The Statesman's Year-book.Vol. 59. Palgrave. 1922. p. 1077.
  29. ^The Far Eastern Review: Engineering, Finance, Commerce.Vol. 29. G.B. Rea. 1933. p. 176.
  30. ^Ushisaburō Kobayashi (1930).The Basic Industries and Social History of Japan, 1914-1918.Yale University Press. p. 255.The 5 - sen? nickel piece was made to weigh 1. 14 momme instead of 1. 24 momme
  31. ^"Taisho copper-nickel Pattern 5 Sen Year 5 (1916) (1)".Heritage Auctions.RetrievedNovember 23,2020.
  32. ^"Taisho copper-nickel Pattern 5 Sen Year 5 (1916) (2)".Heritage Auctions.RetrievedNovember 23,2020.
  33. ^abcdefg"Tiểu hình ngũ 銭 bạch đồng hóa".Pepper's Square(in Japanese).RetrievedNovember 24,2020.
  34. ^abcdefghijChester L. Krause & Clifford Mishler.Collecting World Coins 10th edition.Krause Publications.p. 430.
  35. ^"Bỉ giác nhất lãm".Pepper's Square(in Japanese).RetrievedNovember 24,2020.
  36. ^Reiji Aoyama (1982).New Revised Money Notebook, History and Collection Guide for Japanese Coins.Bonanza. pp. 190–191.
  37. ^The Currency System of Japan.The Balance of International Payments of the United States in 1922-. U.S. Government Printing Office. 1929. p. 8.
  38. ^The Japan Year Book.Japan Year Book Office. 1938. p. 323.Certain amendments were, however, made in the law in June, 1932, and put into effect on and after July 1.
  39. ^abcd"Phát hành の kinh vĩ (1933)".Pepper's Square(in Japanese).RetrievedNovember 27,2020.
  40. ^"Showa nickel Proof Pattern 5 Sen Year 8 (1933)".Heritage Auctions.RetrievedNovember 29,2020.
  41. ^A. Best (2002)."From" Weak Power "to Potential Enemy: Japan".British Intelligence and the Japanese Challenge in Asia, 1914–1941.Springer. p. 103.ISBN9780230287280.
  42. ^ab"5銭ニッケル hóa"(in Japanese). www.buntetsu.net.RetrievedApril 7,2017.
  43. ^"History of Nickel Coinage in Japan".Journal of the Institute of Metals.53.Institute of Metals: 348. 1933.Pure nickel coins are to be substituted for these as from April 1, 1933
  44. ^abcdef"Phát hành の kinh vĩ (1938)".Pepper's Square(in Japanese).RetrievedNovember 28,2020.
  45. ^abcOffice of the Chief of Naval Operations(1944)."Money, Banking, and Credit".Civil Affairs Handbook: Taiwan (Formosa) Economic Supplement.United States Department of the Navy.p. 76.
  46. ^Ministry of Finance (1940)."The Life of Money".Asahi Shimbun. pp. 148–150.
  47. ^"Showa nickel 5 Sen Year 13 (1938), KM-Y53".Heritage Auctions.RetrievedNovember 29,2020.
  48. ^Ministry of the Treasury(July 19, 1940)."Kanpō".Vol. 4060.National Printing Bureau.
  49. ^abcd"Phát hành の kinh vĩ (1943)".Pepper's Square(in Japanese).RetrievedNovember 29,2020.
  50. ^Ministry of the Treasury (August 27, 1941)."Kanpō".Vol. 4392. National Printing Bureau.
  51. ^Reiji Aoyama (1982).New Revised Money Notebook, History and Collection Guide for Japanese Coins.Bonanza. pp. 194–195.
  52. ^ab"5銭アルミニウム hóa"(in Japanese). www.buntetsu.net.RetrievedNovember 26,2020.
  53. ^Ministry of the Treasury (March 8, 1944)."Kanpō".Vol. 5143. National Printing Bureau.
  54. ^abReiji Aoyama (1982).New Revised Money Notebook, History and Collection Guide for Japanese Coins.Bonanza. pp. 195–196.
  55. ^abcd"Phát hành の kinh vĩ (1944)".Pepper's Square(in Japanese).RetrievedNovember 29,2020.
  56. ^abc"5銭 tích hóa (2)"(in Japanese). www.buntetsu.net.RetrievedApril 7,2017.
  57. ^abcd"Phát hành の kinh vĩ (1945)".Pepper's Square(in Japanese).RetrievedNovember 30,2020.
  58. ^Reiji Aoyama (1982).New Revised Money Notebook, History and Collection Guide for Japanese Coins.Bonanza. pp. 218–220.
  59. ^"Japanese Money-Collection Guide-".Japan Numismatic Dealers Association. 1998. pp. 172–173.
  60. ^abc"5銭 tích hóa (3)"(in Japanese). www.buntetsu.net.RetrievedApril 7,2017.
  61. ^Ministry of the Treasury (January 26, 1946)."Kanpō".Vol. 5709. National Printing Bureau.
  62. ^"1 viên vị mãn のお kim が sử えなくなったのはいつからですか?".Bank of Japan(in Japanese).RetrievedOctober 27,2020.
  63. ^"5銭 ngân hóa"(in Japanese). www.buntetsu.net.RetrievedApril 7,2017.
  64. ^"5銭アルミニウム thanh đồng hóa"(in Japanese). www.buntetsu.net.RetrievedApril 7,2017.
  65. ^"Japan 5 Sen Yr.3(1870)".Numismatic Guaranty Corporation.RetrievedFebruary 25,2019.
  66. ^"Japan 5 Sen Yr.4(1871)".Numismatic Guaranty Corporation.RetrievedApril 7,2017.
  67. ^abcdefghij"Japan 5 Sen Yr.22(1889)-Yr.30(1897)".Numismatic Guaranty Corporation.RetrievedApril 7,2017.
  68. ^abc"Japan 5 Sen Yr.30(1897)-Yr.39(1906)".Numismatic Guaranty Corporation.RetrievedApril 7,2017.
  69. ^ab"Yr.13(1938) 4 known Almost entire mintage remelted".Numismatic Guaranty Corporation.RetrievedFebruary 25,2019.
  70. ^abcdefghijklmnop"Japan, 1870-1950 5 Sen".Star City Homer.RetrievedFebruary 25,2019.
  71. ^ab"Hi thiếu 価 trị が cao い5銭 ngạnh hóa の mãi thủ 価 cách"(in Japanese). Antique Coin Info. 26 June 2017.RetrievedDecember 1,2020.
  72. ^abcde"5銭 ngạnh hóa の価 trị と mãi い thủ り価 cách を thiệu giới".Kosen Kaitori(in Japanese).RetrievedDecember 1,2020.
  73. ^"Meiji Proof 5 Sen Year 13 (1880)".Heritage Auctions.RetrievedDecember 2,2020.
  74. ^"【 vĩnh cửu bảo tồn bản 】5銭 ngạnh hóa の価 trị はいくら? Mãi thủ 価 cách ＆ bình quân tương tràng 《 toàn 10 chủng loại 》"(in Japanese). 8 November 2019.RetrievedDecember 2,2020.
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