Someone gave my wife 2, $25 silver gaming tokens (coins) to mark the 10th anniversary of the Golden Nugget 24 Karat Club that are dated 1993. The person who owned them previously thought they weren't worth anything besides $25 but when I tried to cash them in on a recent trip to Las Vegas the staff at the Golden Nugget convinced me keep them as they claimed that they were worth far more than $25. The gaming tokens (coins) were minted by the Nevada Coin Mart, are still in their original portfolios and are in excellent condition. My only problem is that I don't know of a source that can tell me their true value. Can anyone point me in the right direction?