Considered the most highly acclaimed and preferred of its kind, the newest edition of the universal coin-grading encyclopedia by James F. Ruddy showcases over 1000 enhanced coin-grading pictures and adjectival descriptions of regular issue U.S. coin types from 1793 to date. Designated in 1972 as an Official Grading Guide of the American Numismatic Association, Photograde is widely accepted as the most complete grading book ever printed. In fact, over 500,000 copies have been sold to date.
I read the 18th edition - it would be interesting to see what new information is contained in the 19th- and it is a wonderful guide to anyone interested in learning about grading coins. Not only is the practical aspect of grading discussed and photos shown of hundreds of U.S. coins in various conditions, there are also chapters on the history of grading and how the system used now came about, and other aspects to consider when grading coins. The chapter on counterfeiting is very interesting. Topics such as cleaning and toning are seriously discussed and worth the read, too. This is an excellent resource for any coin collector.