Valcambi is a leading Swiss precious metals refinery that was formally a division of Credit Suisse. They are known for producing high quality bullion products, many for large banks around the world. Each 1 Troy Ounce .9995 Fine Platinum bar is in encapsulated in a plastic case with an assay card certifying the weight and .9995 Platinum metal purity. Each assay card has a unique number that matches the bar number.