Free Coin & Precious Metal Appraisal in New Jersey Tri-State Rare Coins: 423 W Union Ave, Bound Brook, NJ 08805 If you have inherited a coin collection, discovered old silver coins tucked away in storage, or have been collecting for years, one of the first questions you may ask is: “How much is my coin collection worth?” At Tri-State Rare Coins, we help customers throughout New Jersey, New York City, Long Island, and Pennsylvania professionally evaluate coin collections of al