In my collection i have a chinese ‘’cash'' coin (how, when and where i got this i can not remember for the life of me, i already had it when i was a kid) After some research i found that it is a Qianlong (Tongbao; Boo-yuwan) however i would like to find out which version of the coin mine is. It is probably one of the three ‘’ZJ (1775-1794)'' variants.
However i hope someone here might be able to tell me exactly which of the three version it is.
