Our 100oz silver cast bar is of investment-grade quality with a minimum fineness of 999. Each freshly minted 100oz silver cast bar displays a unique serial number, which is laser-engraved on the bar itself. Each silver cast bar features the official stamp of the Kinesis Mint, a hallmark of true quality. Through close control of each stage of the production process, Kinesis Bullion ensures all bars are manufactured to the highest ethical and quality standards.