A 100 oz silver bar contains 100 troy ounces of .999 fine silver (3,110.35 grams or approximately 6.86 pounds). It is the standard institutional-size silver bar and carries the lowest premium per ounce of any silver product — typically $0.50-1.50 over spot.
Popular brands include Engelhard, Johnson Matthey, Royal Canadian Mint, and Asahi. A 100 oz bar is approximately 6 inches long and weighs nearly 7 pounds, making it substantial to handle and requiring secure storage. At current silver prices, each bar represents roughly $8,500+ in value.
The 100 oz bar is ideal for investors making large silver purchases who want to minimize premiums. The tradeoff is lower divisibility — you can't sell a fraction of a bar. Vintage Engelhard 100 oz bars are highly collectible and can command premiums of $100+ over standard bars depending on the serial number and pour type.
Standard bars carry minimal premium. Vintage Engelhard bars with specific serial ranges are collectible and command $100+ premiums.