Experts say buy a book on rare coins, before you buy coins you think are rare. Coins can teach you a lot about history. For example, "In God We Trust" first appeared in this 1864 two-cent coin.

Our two-cent coin was introduced in 1864. As the Civil War marched on the lack of coinage in the country was what spurned the minting of a two-cent piece. During the war people hoarded coins of copper ...