This is a CompleteTransport Set of 7 stamps.Issued in 1941, A new set of airmail stamps of the twin-motored transport plane design made their appearance beginning in 1941. These stamps were intended to cover the various rates in effect for both domestic and overseas airmail service. The 6¢ issue covered domestic airmail service. The 8¢ issue was required when postage rates were increased to help finance WW II. . The 10¢ issue covered airmail service to areas in the West Indies , as well as Central and South America . The 15¢ issue covered airmail service to areas in the West Indies as well as Central and South America . The 20¢ issue was intended for use to and from Hawaii . The 30¢ issue was used on trans-Atlantic airmail to Europe . Like the 20¢ issue, this 50¢ stamp replaced the trans-Pacific airmail issue of the same denomination. The stamps in the photo are the stamps you will receive. These stamps are in superb unused condition. Stamps will be shipped and bagged in a stay flat mailer. Thank you for looking.