Collectible coins refer to coins that are valued for their rarity, historical significance, condition, and demand among collectors. In the United States, half dollar coins, often referred to as 50 cents or 50c, are popular among numismatists. A specific example is the 1991 Philadelphia Mint half dollar, which is part of the Kennedy series and was produced in large quantities. Coins from mint rolls, such as a roll of 50 half dollars, are often sought after for both their numismatic appeal and potential investment value.

Item Denomination Series Year Mint
1991-P 50c Roll 20 Coins 50c Roll Half Dollars 1991 Philadelphia