1942 Nickel no mint mark?

Where is the mint mark on a 1942 US nickel?

• Answer:

  Two different types of nickels were minted in 1942. During the early part of that year the coins were made out of the familiar cupronickel alloy that's used today. These coins were made at Philadelphia (no mint mark) and Denver, which used a small "D" to the right of Monticello. In mid-year the Mint changed the coin's composition in order to save nickel metal for the war effort. The new coins looked similar, but were made of an alloy of copper, silver, and manganese. To distinguish them from their cupronickel predecessors, the Mint used large mint marks located above the dome of Monticello. These coins were struck at San Francisco and Philadelphia. For the first time, Philadelphia coins carried a P mint mark.