Lincoln Cent Key Dates – Wheat Cents
1909-S VDB
1909-S
1909-S Over Horizontal S
1914-D
1917 Doubled Die Obverse
1922 No “D” (No Mint Mark)
1931-S
1943, 1943-D, 1943-S Bronze
1944, 1944-D, 1944-S Steel
1944-D D Over S
1955 Doubled Die Obverse