The three cent coin has an unusual history. It was proposed in 1851 both as a result of the decrease in postage rates from five cents to three and to answer the need for a small-denomination, easy-to-handle coin. The three cent silver featured a shield on a six sided star on the obverse and the Roman numeral III on the reverse. The coin was initially composed of 75% silver and 25% copper to ensure that the coin would be considered real currency yet not worth melting down for the silver. The coins were physically the lightest weight coins ever minted by the United States, weighing only 4/5 of a gram and with a diameter smaller than a modern dime
The three cent nickel was only minted in Philadelphia and, except for a larger date on the 1889 pieces, had no design differences throughout its run. Over the course of the series mintage declined, and some of the dates are scarce. But, with an 1865 mintage of over eleven million, a type piece can be inexpensively obtained.