Gold bars (ingots) are minted in sizes from 1-oz. to 400-oz. The larger bars are typically traded on major exchanges, e.g., COMEX. Investors usually buy 1-oz. and 10-oz. gold bars, which are easier to trade on the secondary market.
Gold bars come in various designs, from simple to elaborate, but most are stamped with the gold mass, purity and issuing company.
Several companies mint and hallmark (brand) gold bars. Commonly traded hallmarks include Credit Suisse, Produits Artistiques de M’taux Pr’cieux (PAMP), Johnson Matthey and Englehard.