A round is defined as a coin that has no legal tender status and is minted by a private silver refinery. The 1 oz. Silver International Trade Bullion (ITB) coin contains 1 Troy ounce of .999 fine silver and features a unique design. ITB rounds are a cost-effective way to add precious metals to your investment portfolio because of their low premium over spot price. Silver rounds are easily traded, stacked, stored, and counted.