The 2005-P Bison Nickel Proof is a collectible coin minted in Philadelphia in the United States. This uncirculated coin features a unique design with a bison on the obverse, making it a desirable piece for collectors. The copper composition and proof strike type add to its appeal for those interested in Jefferson nickels and coin varieties. Although ungraded and uncertified, this coin is a valuable addition to any numismatic collection.