These are some of the most valuable old pennies (including Wheat pennies and Indian Head pennies) -- most of them are worth $500 or more! See exactly what they’re worth and why they’re worth so much money:
1909 pennies
1914 pennies
1922 pennies
1931 pennies
1943 pennies
Doubled Die pennies from 1955, 1972, 1983, and 1984 

How to tell steel pennies from valuable bronze pennies.