Diamond Four C's

Diamond Four C's in Providence, Rhode Island caters to both casual collectors and serious numismatists. They have a 4.6-star rating from 9 reviews. Expect to find U.S. and world coins, paper currency, bullion, and related supplies. It's always a good idea to phone ahead if you're looking for something specific.

* Information may change. Verify details on the dealer's official website before visiting.