The Feuchtwanger Coinage, specifically the 3-cent piece (3c), was produced in 1864 by the German immigrant and engraver Matheus Feuchtwanger. These coins were created in response to a shortage of small denomination currency during the Civil War. While not officially sanctioned, the pieces were made of an alloy of nickel and copper and featured a distinctive design intended to resemble the U.S. currency of the time. The Feuchtwanger coins are considered collectible due to their unique place in numismatic history and limited production, with many collectors seeking them for their artistic and historical value.