Society of U.S. Pattern Collectors
Home to the Society of U.S. Pattern collectors, this well-organized site provides in-depth information on pattern coinage (prototypes for coins that were never approved for circulation). The U.S. Mint produced well over a thousand different patterns, as well as many die trial and experimental pieces. The site provides beautiful high resolution examples of half cents, dimes, nickels, half eagles, trade dollars, splashers, mint errors, and more. Also, don't miss the pictorial history of patterns, in the beginners corner.