The product is a block of 4 used 2 cent postage stamps from the United States, featuring the historical figure George Rogers Clark and the location Vincennes, IN at Fort Sackville. The stamps have a carmine color and are handstamped, with a grade of F/VF. These stamps were issued in 1929 and are from the state of Kansas. It is not certified, but it is a collectible item for those interested in United States stamps and historical events.