The 1955 P-D-S United States Uncirculated Mint Set is a highly sought-after collection of silver coins from the United States Mint. This set includes a 50-cent piece minted in Philadelphia in 1955, with a fineness of 90% silver. The coins are of business strike type and are in ungraded condition, making them ideal for collectors looking to add a piece of American numismatic history to their collection.