Trade coin
Trade coins are coins minted by a government, but not necessarily legal tender within the territory of the issuing country. These quasi-bullion coins (in rarer cases small change) were thus actually export goods – that is, bullion in the form of coins, used for the bulk purchase of important goods from other countries, where they could be bought at a favourable price, compared to the purchasing power of the same amount of bullion within the trade coins' country of origin.