Collectible coins are often categorized based on their historical significance, rarity, condition, and type. In the United States, collectible coins include denominations such as the 1-cent (penny) and 50-cent (half dollar) pieces. Proof sets, comprising coins struck with a higher quality finish for collectors, were produced annually, including in 1998, reflecting unique designs and limited mintages that enhance their appeal. Collectors often pursue these coins for investment purposes or to complete specific collections, leading to varying levels of demand and market values.

Item Denomination Series Year Mint
1998-S 1c-50c Proof Set 1c-50c Proof Sets 1998 San Francisco