Postal Commemorative Society is the former name of the company now known as PCS Coins and Stamps. This company was founded in 1970 and markets a range of collectible products, including stamps, and has an arrangement with the U.S. Postal Service.
PCS Coins and Stamps manufactures collectible stamp products in partnership with the U.S. Postal Service, including collector panels and gold foil replica cachets. PCS Coins and Stamps is the world's largest philatelic organization. Its website also offers stamps issued by the Postal Service that are organized into collections or series as well as several sets of stamps sold as individual pieces.