Lincoln Cent Error Coin Guide 2021The Lincoln cent error guide has more than 2,000 listings for all types of known errors. More error types with descriptions and photographs. More numismatic terms added to the glossary. The wide range of auction prices paid for Lincoln cent errors makes this guide a necessity for a collector evaluating encapsulating or purchasing an error coin. Listings in this book include: Die errors Errors created from broken dies, collars, and misaligned dies.