1955/55 Doubled Die Lincoln Cent
The 1955 Doubled Die Lincoln cent is another coin that is extremely popular among Lincoln penny collectors. Although this is considered an error coin, many collectors still seek to add one to their collection. This coin is undoubtedly the most famous error coin ever produced by the United States Mint.
The tale of this error coin began when the United States Mint used a coin die that received two impressions that were slightly offset from each other. Mint workers discovered the error after approximately 20,000 to 24,000 coins were already mixed with a batch of properly produced coins.