Collectible coins refer to numismatic items that are valued for their rarity, historical significance, and condition rather than just their face value. One notable example is the United States quarter, particularly the 1821 Early Quarters minted in Philadelphia. These coins, often sought after by collectors, feature unique designs and craftsmanship that reflect the era's minting practices. The 1821 quarter, part of the early series of U.S. coinage, is recognized for its limited mintage and is a significant addition to any numismatic collection.

Item Denomination Series Year Mint
1821-P (Philadelphia) Early Quarters 25¢ (Twenty Five Cents, Quarter) Early Quarters 1821 Philadelphia
1821-P (Philadelphia) Early Quarters 25¢ (Twenty Five Cents, Quarter) Early Quarters 1821 Philadelphia