This rare 1990 S Jefferson Nickel DCAM GEM Proof from the United States Proof Set is a stunning addition to any coin collection. The coin features a beautiful design depicting Monticello, the home of Thomas Jefferson, and is made of copper and nickel with a fineness of 0.75. The coin is uncirculated and ungraded, and was struck in San Francisco. It comes from a proof set and is uncertified. This unique and valuable coin is a must-have for any collector or history enthusiast.