7Whitman Publishing debuted the Handbook of United States Coins in 1942 as an authoritative resource showing how much coin dealers were paying on average to buy U.S. coins by type, date, and mintmark. The groundbreaking new book was an immediate hit, popular with dealers and collectors alike. For more than 77 years coin dealers have used the OFFICIAL BLUE BOOK ‚ (as it came to be known) to make buying offers. As a collector, you can use it to find out how much your coins are worth The Blue Book's price listings offer a real-world look at the coin market, gathered from dealers around the country. The new 78th edition includes updated prices, special features, and many new photographs. Coverage includes colonial and early American Coins, federal coins (half-cents through gold double eagles), commemoratives, Proof sets, die varieties, private and territorial gold, tokens, the newest Presidential dollars, National Park quarters, bullion coins, and other United States Mint products.