The product is a set of four Fleetwood First Day Covers featuring the 1975 #1572-1575 10c USPS Bicentennial stamps. These covers commemorate a historical event with a cancellation type of First Day of Issue. Each cover is from the United States and is of used quality, with a denomination of 10 cents. The covers are uncertified and ungraded, making them a valuable collectible item for stamp enthusiasts interested in United States postal history.