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799:: seven airmail stamps, Airplanes: 5c, 7c, 10c, 15c, 25c
0799:: seven unused airmail stamps, Airplanes: 5c, 7c, 10c, 15c, 25c
Jay Smith & Associates: United States: Stamps: Airmails
U.S. Air Mail Stamps - Jamestown Stamp Company, Inc.
This 1949 Mint booklet pane of 6 U.S. Airmail Stamps features the DC-4 Skymaster which was frequently used for transporting mail.
U.S. Air Mail Stamp C39a
US Stamp 1928 5c Beacon on Rocky Mountains Airmail Stamp MNH #C11 These are real USPS postage stamps that are accepted by the USA Postal Service as
1928 Beacon on Rocky Mountains Single Airmail Postage Stamp - Sc# C11 - MNH,OG
Daniel F. Kelleher Auctions, LLC Sale - 758 Page 124
Use of the 5-Cent Stamp for Air Mail
Scott C11
Us Airmail Stamps
US Stamps - C - Air Mail for sale
C7//C150 - 1926-2012 US Airmail Collection, Set of 143 Stamps - Mystic Stamp Company