The coin in question is a 1971 Jefferson Nickel, minted at the Philadelphia Mint. It features a denomination of 5 cents (5¢) and was designed by Felix Schlag. This particular piece is noteworthy as it is a Proof coin, which indicates it was struck with a high level of detail and a polished finish, making it an attractive addition to any collection. The Jefferson Nickel has a diameter of 21.2 mm and a weight of 5 grams, composed of a material mixture of 75% copper and 25% nickel. It carries the hallmark of a plain edge and is classified under the sub-type of coins, specifically for the United States of America. Produced in a limited mintage of just 3,220,733 units, this coin has become a sought-after item among numismatists. The lack of a mint mark signifies its production in Philadelphia. Given its high quality and limited availability, the 1971 Proof Jefferson Nickel holds a significant place in the series, appealing to both collectors and those interested in U.S. currency history.