IRON Japanese coin Ko-Kanei Tsuho Iron 1 Mon 1774 AD.~ Hitachi Ota Mint KUU NI
Japanese coin Ko-Kanei Tsuho Iron 1 Mon 1774 AD.~
Kuu Ni 二 on reverse; Hitachi Ota Mint
This coin is accompanied by a Certificate of Authenticity!


weight: 2.91 grams size: 23 mm

IRON ~!!

Kuu ni note that the "ni" is on the bottom Hitachi Ota (1774) 23mm wide x 1mm thick

2. Iron or Copper Alloy

All old Kan'ei coins made for circulation are made of copper alloy. New Kan'ei coins are mostly made of copper alloy as well. However, in the early 1700's copper mines began running out in Japan and copper became more scarce. It gradually became more expensive to manufacture copper coins than they were worth. One of the responses to this problem included making coins of iron which was cheaper. The government first authorized the manufacture of iron coins in 1739. Copper alloy coins continued to be manufactured but frequently of less weight and lower quality than those of the late 17th century. Eventually copper alloy coins were mainly minted in higher denominations of 4 mon(from 1768) or 100 mon (from 1835).

The best that can be said for the iron coins is that they have a primitive beauty. Iron is difficult to cast with the fine features of coins and script. The surfaces of the coins are rough. The characters are often unclear in appearance and the inner and outer coin edges are often unfiled and jagged. Furthermore, the iron coins rust easily. From 1866, just about the time of the collapse of the feudal order and during a time of civil war and high inflation, iron coins of 4 mondenomination were manufactured.

A copper alloy coin

Hirano Shinden, tiger's tail kan (1739)
23mm wide x .9 mm thick

A copper alloy coin

Naniwa, fine character (1728)
25mm wide x 1.2mm thick

An iron coin

Kamedo, small size (1765)
24mm wide x 1mm thick

note the old style legs even thugh this is a new Kan'ei coin. This is the single exception to the "legs" rule.

An iron coin

Ishinomaki, small character, haisen (1768)
23mm wide x 1mm thick

hirano shinden

naniwa copper

Kamedo iron

Ishinomaki iron


Kuu

Hitachi Ota (1768)
23mm wide x 1mm thick

Kuu ni
note that the "ni" is on the bottom

Hitachi Ota (1774)
23mm wide x 1mm thick

Ashi

Ashio, small character (1741)
23mm wide x 0.7mm thick

Sa (1714 version)

Sado (1714)

kuu ni verso Ashio verso old sado verso
ashio recto old sado recto

Reference: https://www.history.ucsb.edu/faculty/roberts/coins/Kaneibasics.html

 

A Japanese samurai in full regaliaTravel back in time to storied feudal Japan - to the land of samurai, daimyo (warlords) and shoguns! This much-mythologized period has been widely celebrated in the popular media and arts. From NBC's Heroes to the novel and miniseries Sh¨­gun to the Tom Cruise big-screen epic The Last Samurai, feudal Japan has captured our collective imagination for decades. The original kanei tsuho coins were made at the Edo mint, which was most likely inside Edo Castle proper, the main stronghold of the shogunate in Tokyo.


Japanese Numismatics
The
 mon was the main unit of currency in Japan until 1870, when it was replaced by the yen. It resembles and was derived from the Chinese wenor cash coin. The coins have a square hole in the middle, which allowed them to be produced using less metal than a solid coin, but which more importantly allowed them to be strung together on a piece of string, for easy transport and payment.

The "bun" mint mark is the
 kanji character on the reverse of the coin (ÎÄ). It indicates that this coin was cast in Edo (modern-day Tokyo). The coins are sometimes called bunsen, because of the "bun" character. The term "bun" is the second syllable of the Japanese word kanbun (Japanese: ŒˆÎÄ). The Kanbun era is the name for the Japanese era spanning the years 1661 to 1673, during which the coins were made.

Kanei Tsuho coins are named after the era in which they were introduced. Kanei (often written "Kan'ei" (Japanese: ŒˆÓÀ)) is the name of the Japanese era spanning the years 1624 through 1643. Thus the term
 kanei tsuho literally means "money of the Kan'ei era". Even though the Kan'ei era ended in 1643, the term for the 1 Mon coins remained in use for over two hundred years!

Despite their high grade and attractive appearance, these coins are not reproductions. Each coin is guaranteed to be an original, solid copper 1668-Bun Square Hole 1 Mon, cast in Edo (Tokyo) and grading a very nice very fine. A little bit of verdigris is typical on these coins, but they are much nicer than usually found (when they can be found at all!).

For a more detailed exploration of the Tokugawa Shogunate, as well as the city of Edo and the culture of the Floating World, please see the article further down in this presentation.


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