USA - 1946: An 5 cents carmine Air Post stamp depicting DC-4 "Skymaster" mail plane in flight. For prepayment of postage on all mailable matter sent by airmail. The Douglas DC-4 is an American four-engined (piston), propeller-driven airliner developed by the Douglas Aircraft Company. Military versions of the plane, the C-54 and R5D, served during World War II, in the Berlin Airlift and into the 1960s. From 1945, many civil airlines operated the DC-4 worldwide

---

USA Air Post stamp. This postage stamp, as a physical objects, is part of a private collection owned by the author of the image

---

Size: 5400px × 3500px
Location: United States of America
Photo credit: © World of Stamp / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: -engined, 1946, air, aircraft, airlift, airliner, airlines, airmail, airplane, america, american, art, aviation, berlin, civil, company, dc-4, delivery, douglas, federal, flight, government, historic, history, ii, letter, mail, matter, military, package, piston, plane, post, postage, postal, prepayment, propeller-driven, regular, retro, service, skymaster, stamp, states, transportation, united, usa, version, vintage, war, world, worldwide