Silver Bars
Silver Bars are produced to specific standards and are marked on the bar thus a silver bar should have stamp on it, the amount of silver content, the degree of fineness which should be 999.0 or more, and the name of the mint in which it was struck. 100-oz silver bullion bars are often called investment bars. The most popular silver bars are Johnson-Matthey and Engelhard which are only available when other investors decide to sell since they have not been mass-produced since the mid-1980s.