SilverTowne’s “PROSPECTOR” Fine Silver Bars. To preserve their qualities, I always handle my silver bars with care. Never with bare fingers and hands. Each bar contains 1 Troy oz. Made in the United States. Issued by SilverTowne Mint. Each bar has been stamped with Mint’s name & logo, metal purity, and weight. Reverse features mint’s name and logo surrounded by a repeated crisscross pattern.