Collectible coins are often categorized into various types, including numismatic coins, silver and gold bullion, and specialty items such as Proof Sets. The United States has a rich history of coin production, with notable denominations like the 1 cent (1c) coin, often referred to as the penny. Proof Sets are specially minted coins that undergo a higher quality production process, resulting in a glossy, mirror-like finish, and are typically released annually. The 1990 Proof Set includes coins from various denominations, showcasing the unique designs and craftsmanship of that era in U.S. coinage.

Item Denomination Series Year Mint
1990-S 1c-$1 Prestige Proof Set 1c-$1 Proof Sets 1990 San Francisco