A convenient way to buy silver in the size of a palm is using ten ounce silver bars. Typically obtained from the secondary market, thoroughly examined, and chosen from the current stock, these various bars. From a variety of mints, including Silvertowne, Johnson Matthey, and Sunshine, among others, generic ten ounce silver bars will arrive in a range of sizes, shapes, and conditions. Each bar is examined to make sure it weighs exactly ten troy ounces and has a silver content of 99.9% or higher. IRA-approved, these silver bars.