Mint Mark. Anyone who has handled United States coinage has seen a mint mark. The small capital letter on the obverse ("heads" side) of a coin tells collectors, customers, and institutions where that coin was minted.

Do all coins have a mint mark?

Mint and has always been the main facility, most coins from historic Philadelphia have no mint mark. Exceptions are the Wartime nickels of 1942-45 (shown), Anthony dollars of 1979-81, and all other Philadelphia coins after 1979 except the cent.

What if my coin doesn't have a mint mark?

Mintmark: A letter or other mark on a coin denoting the mint that manufactured the coin. ... If the date of a US coin is written without a mintmark, it means that the coin has no mintmark and was (usually) minted in Philadelphia.