NPMEX is a trusted industry leader offering buying, selling and loan services to its clients on precious metal material, rare coins, rare US paper currency, jewelry, diamonds, watches and other high-end valuables throughout the United States. On a daily basis we provide clients with the best possible prices and rates. Name: National Precious Metals ExchangeAddress:Continue reading “The National Precious Metals Exchange Buys and Sell Gold Bullion, Silver Bullion, Rare Coins & Jewelry.”