The product is a 1984-S Proof Jefferson Nickel from the United States Mint in San Francisco. This coin is composed of 75% copper and 25% nickel, with a denomination of 5 cents. It features a strike type of proof and is graded as ungraded. The coin is uncirculated and uncertified, making it a valuable addition to any coin collection. Despite the presence of a spot of corrosion, this coin is a rare find for collectors looking for unique pieces in their collection.