The product is a block of 4 1959 US stamps featuring the Scott #C60 Air Mail Jet Airliner design, with a denomination of 7 cents. These stamps are Mint Never Hinged and original gum, making them ideal for collectors looking for pristine examples of US back of book stamps from the 1950s. The stamps showcase a United States place of origin and are a valuable addition to any philatelist's collection.