U.S. Air Mail Stamp C39 Unused

United States Airmail Stamp - 1949 - 6¢ DC-4 Skymaster (as #C33)

6 cent air mail Values - MAVIN

U.S. Back of the Book Stamps

U.S. Efo's C39 Mint (ID # 91043) United States, Air Mail Stamp

AIR MAIL POSTAGE 8 full sheets 1946 dc-4 Skymaster scott c32

C82 - 1971 11c Jet Airliner Coil - Mystic Stamp Company

USA Airmail, Special Del, etc - Collectibles of Bwdavis

Air Mail Markest Stamp Co.

Scott C39 US Air Mail Stamp 1949 6c DC-4 Skymaster Used Pair

GRAF ZEPPELIN #C38-C39 South American Round Flight Europe Germany

H.R. Harmer GPN, Inc. Sale - 3063 Page 26