2586. The product is a 1948-49 Buffleheads Migratory Bird Hunting Stamp made of 24 Karat Gold and Sterling Silver by the Franklin Mint. This bar-shaped coin has a silver composition with a fineness of 0.925, containing 4.2 grams of precious metal content per unit. Originating from the United States, this unique piece serves as a collectible item for those interested in coins and paper money, specifically silver bullion bars and rounds.