投资型硬币是由压印工序而制成的，并且保持着价值作为收藏和投资。投资型金银币一般是指那些在1800年后被铸造的硬币、具有不少于.999纯度，而且是该国家的法定货币。常见的投资型硬币都是由纯金或者纯银制成，另外也有铂金、钯金等等。

投资型硬币都有特定的重量，通常是以盎司作单位，但也有铸币厂会铸造一公斤甚至更重的「币」。

以下是知名度高而且设计精美的银币：

A bullion coin is a coin struck from precious metal and kept as a store of value or an investment, rather than used in day-to-day commerce. The United Kingdom defines investment coins more specifically as coins that have been minted after 1800, have a purity of not less than 900 thousandths and are, or have been, a legal tender in their country of origin. Under United States law, "coins" that fail the latter requirement are not coins at all, and must be advertised as "rounds" instead. Bullion coins are usually available in gold and silver, with the exceptions of the Krugerrand and the Swiss Vreneli which are only available in gold. The American Eagle series is available in gold, silver and platinum, and the Canadian Maple Leaf series is available in gold, silver, platinum and palladium.