100 Mon "Tenpotsūhō"

Features

Country Japan
Emperor Ninkō (1817-1846)
Type Standard circulation coin
Years 1835-1870
Value 100 Mon = 1/40 Ryō (1/40)
Currency Ryō (1601-1867)
Composition Bronze (cast)
Weight 20.7 g
Diameter 49 mm
Thickness 2.6 mm
Shape Oval (With a square hole)
Orientation Medal alignment ↑↑
Demonetized 01-01-1954
References C# 7,
William D. Craig; 1976. Coins of the World, 1750-1850 (3rd edition). Western Publishing, Racine, Wisconsin, USA.
DHJ# 5.5-12
David Hartill; 2011. Early Japanese Coins. Authors OnLine, Gamlingay, England. ISBN 9780755213658.

Obverse

Four vertical characters divided by hole

Lettering:



Translation:
Tenpo
Currency

Reverse

Value above hole and signature of the mint official below

Lettering:

Translation:
Mon
Hundred

Edge

Smooth, paulownia stamps on the left and right side (various sizes and forms exist)

100 Mon "Tenpotsūhō" -  obverse

© Idolenz

Comments

Officially only produced in the mints of Honza in Edo and Osaka, because it was profitable to make them. They were illegally cast in provincial mints like Satsuma, Mito, Fukuoka, Kochi, Yamaguchi, Aizu, Sendai, Akita and Morioka.
Official coins were cast with very fine sand from Bosho and have a smooth field, inofficial casts used a much coarser sand and have much more grainy fields.

After the establishment of the modern currency system this 100 mon coin was valued at only 8 rin.

Many varieties exist:


Stamp varieties: LINK

See also

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Date VG F VF XF AU UNC
ND (1835-1870)  11.26 13.40 16.43 _unknown variant

Values in the table above are expressed in USD. They are based on evaluations by Numista users and sales realized on Internet platforms. They serve as a measure, but they are not intended to be relied upon for buying, selling or exchanging. Numista does not buy or sell coins or banknotes.

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This index is based on the data of Numista members collections. It ranges from 0 to 100, 0 meaning a very common coin or banknote and 100 meaning a rare coin or banknote among Numista members.

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