The 1939 Double Die Reverse Jefferson Nickel is a rare and highly sought-after coin featuring a doubled "Monticello" on the reverse. Minted in Philadelphia in 1939, this nickel is a part of the United States coin collection and is a valuable piece for collectors of Jefferson nickels. With its unique variety and distinctive doubling of the Monticello design, this coin is a prized addition to any coin enthusiast's collection.