According to the Numismedia website, the following are some of the key dates and varieties to look for when valuing a 1950s US penny:
- 1955 Doubled Die Penny: This is one of the most famous and valuable errors in US coinage. The doubled die variety occurs when the dies used to strike the coins are misaligned, resulting in a doubling of the design elements. 1955 doubled die pennies can be worth several hundred dollars or more, depending on their condition.
- 1958-P No S Penny: This is a rare variety that is missing the "S" mint mark from the Philadelphia Mint. 1958-P no S pennies can be worth several hundred dollars or more, depending on their condition.
- 1959-D Doubled Die Penny: This is another rare error variety that is characterized by a doubling of the design elements on the reverse of the coin. 1959-D doubled die pennies can be worth several hundred dollars or more, depending on their condition.
- 1953-S Penny: This is a rare date that is only worth a few dollars in circulated condition. However, uncirculated examples can be worth several hundred dollars or more.
- 1956-D Penny: This is another rare date that is worth a few dollars in circulated condition. However, uncirculated examples can be worth several hundred dollars or more.
It is important to note that the value of any coin can vary depending on market conditions and the opinions of individual buyers and sellers. If you are unsure of the value of a 1950s US penny, it is a good idea to consult with a professional coin dealer before you buy or sell it.