This is the famous and unique 1913 Type II Buffalo nickel struck in copper. This used to be J1790 in earlier editions. It was struck as a business strike on a planchet of 95% copper, 5% nickel and zinc. Pollock delisted this as possibly being a mint error. This piece was originally housed in a leather case with the 5 1913 Liberty nickels, an example of J1951/P2024 (this used to be J1789A in earlier editions) and a regular 1913 type II. The copper trial and case are now in the possession of the Eric P. Newman Numismatic Education Foundation. For additional information on this piece, we recommend the article "A Forgotten Nickel & Its Companions" by Jeff Reichenberger in the September 2011 edition of the Numismatist. The image above is of the actual piece and is courtesy of Eric P. Newman and Jeff Reichenberger.