According to our favorite web site about such coins, PrimalTrek.com, the four-character inscription on this massive charm, tai he zhong bao, means 'peace and harmony' or 'prosperity and harmony.'
The Jin Dynasty dates back at least 1000 years ago, so genuine coins are that old. The question is, 'is my coin really that old, or is it a modern fake?'
Counterfeiting is rampant in Chinese coins today. The only sure-fire method of distinguishing authentic from replica coins is to submit them for professional authentication. However, knowledgeable collectors and professional coin dealers can usually identify less-than-perfect fakes with an in-person inspection.
We have seen genuine coins selling around these prices:
worn: $20 US dollars approximate catalog value
average circulated: $30
well preserved: $60
These are very approximate values.