Although the notion of a three-cent piece strikes us as strange today, in 1851 the denomination actually seemed like a good idea to members of Congress and even to members of the public. It did serve a purpose for a time. The impetus for this coin—the smallest ever issued by Uncle Sam in terms of weight and thickness—was twofold. It was “fathered,” so to speak, by the California Gold Rush and “mothered” by the nation’s postal system.