This is a set of 20 Forever Stamps featuring the iconic American pop artist Roy Lichtenstein. The stamps are in mint condition without any signs of damage or wear. They are perfect for collectors or fans of Lichtenstein's unique art style. The stamps are official USPS stamps and have not been certified by any third-party organization. The multi-color stamps showcase Lichtenstein's bold and graphic style, making them ideal for sending letters or displaying in a collection.