User:Donald Trung/Recast cash coins (Iutsushi)

This page serves as the editing history for Mother coin. ✅. --Donald Trung (talk) 17:50, 3 July 2018 (UTC)

Iutsushi


Iutsushi (Japanese: 鋳写し) Is a Japanese term that could be translated as "to cast a copy from", this refers to a technique where regular circulating cash coins were used as mother coins, this was a very common practice in Japan until the seventeenth century and mostly Chinese cash coins from the Song and Ming dynasties were used. Outside of Japan this technique was also largely used to produce counterfeit currency by illegal Chinese and private Vietnamese mints, as the cash coins produced by using the Iutsushi technique were less crisp than their mother coins, often have smooth reverses, and these coins shrunk after metal had cooled down, Iutsushi coins are diminutive in size compared to the original circulating coins and the inscriptions are also inferior in quality as they display more softer and quite blurry. For this reason the cash coins produced using this technique were among the cash coins known as Bitasen (鐚銭) or bad metal coins in Japan.

Due to Iutsushi it’s often very hard to distinguish Japanese Bitasen from Chinese counterfeit cash coins as well as privately produced cash coins from Vietnam as many of these used the same inscriptions and it's not uncommon for there to be large variations in both the quality and metal content of original coins that have been heavily circulated.

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 * 1) REDIRECT Mother coin


 * 1) Iutsushi.
 * 2) iutsushi.
 * 3) 鋳写し.

Standard source

 * July 2018.