You didn't mention what the coin is (dime, quarter etc) but the the "no mint" mark is indicative of being minted in Philadelphia. As far as how much? That depends on it's condition, the type of doubling it is, and whether or not it's one of a kind or one of many. And Chris Fontaine, thanks for chiming in!
I Dont think they buy them if it was gold then yes I guess best to call them you never no how hes feeling there a good family owed place i like them
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