This product is a plate block of four United States stamps with a denomination of 10 cents. The stamps were issued between 1941 and 1950 and feature a twin-motored transport plane in violet color. The stamps are of F/VF grade and are mint never hinged. The face value of the stamps is 0.40 dollars. The plate block is Scott #C27 and has the serial number #22757. The stamps are related to the topic of aviation and were manufactured in the United States. The certification of the stamps is uncertified.