1972 Franklin Mint Proof Set Bankmarked Sterling Silver Ingots - 50 States - Beautiful Proof Silver Ingots - 50 Sterling Silver 1000 grain ingots - in Box with Papers. Images are accurate - set is in pristine condition. The item "1972 Franklin Mint Proof Set Bankmarked Sterling Silver Ingots 50 States" is in sale since Sunday, May 20, 2018. This item is in the category "Collectibles\Decorative Collectibles\Decorative Collectible Brands\Franklin Mint\Other Franklin Mint".The seller is "mullencoins" and is located in Ada, Michigan. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia.