Credit Suisse bank is the one of the world's biggest Swiss banks and these beautiful platinum bullion bars are exclusively produced for Credit Suisse bank by Switzerland's prestigious refiner Valcambi Swiss. These bars are backed by Credit Suisse Bank of Switzerland and are 999.5 pure platinum. Each bar (1 gram and 5 grams) is stamped with its exact weight and purity and the assay certificate bears the Credit Suisse logo, an internationally recognized symbol of superiority. These bars come mint-sealed in plastic with a certificate of authenticity.