EDO PERIOD SILVER COINAGE

1736-1820 MAMEITAGIN  ERA JAPAN  SILVER COIN 

This coins have silver content of 35 to 45% 

Common name Silver Slug

SEAL STAMPED ON TOP AND REVERSE OF THIS COIN 

Size coin 19x13x7 mm 

Weight 9.09 Grams

 Condition   crude

 Edo history 

In the 17^Th centaury bronze coins were minted

These had standard size and weight controlled by ruling Shogun 

The shogunate government started to mint silver coins by tale

Such coins like Chogin ,silver slugs and mameitagin,bean shaped liver coins were measured by weight minted in Ginza mint 

These coins were high standard as previous century coins were not standard and caused economic chaos. 

Late 17^th century the  silver character mon was added, a unit of currency was added to the back of kan’ie tsuho coin and standard size was over seen by the Bakufu in the Kameido part of Edo