United States
Scott #649 1928
2c Aeronautics Conference Block.
Mint never hinged.
$5.25 Item #USA0649S33
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United States
Scott #649 1928
2c Aeronautical Conference 1928 Green Illustrated Washington, D.C. International Civil Aeronautics Conference Dec. 12-14, 1928. First Day to Birmingham, England. Congress of the United States Ackerman M.C. corner card. LEGAL SIZE.
Typewritten Address.
$55.00 Item #USA0649W01
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United States
Scott #650 1928
2c and 5c Aeonautical Conference 1928 Green Illustrated Washington, D.C. International Aeronautical Conference Dec. 12-14, 1928 First Day Airmail Envelope to Pittsburg, Pa. Uncacheted.
Rubberstamp Address.
$25.00 Item #USA0650C02
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United States
Scott #650 1928
2c and 5c Aeonautical Conference 1928 Green Illustrated Washington, D.C. International Aeronautical Conference Dec. 12-14, 1928 First Day Airmail Envelope to Pittsburg, Pa. Uncacheted.
Rubberstamp Address.
$25.00 Item #USA0650C03
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United States
Scott #650 1928
5c Aeronautical Conference 1928 Green Illustrated Washington, D.C. International Civil Aeronautcs Conference Dec. 12-14, 1928 Airmail Envelope to Kansas City, Mo. General Purpose rubberstamp First Day of Issue cachet.
Typewritten Address.
$15.00 Item #USA0650C05
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United States
Scott #650 1928
5c Aeronautics Conference Bottom Plate 19659 Block of Six.
Mint never hinged.
$40.00 Item #USA0650C06
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United States
Scott #650 1928
5c Aeronautics Conference 1928 Washington, D.C. International Civil Aeronautics Conference Dec. 12-14, 1928 slogan Local Use. Uncacheted.
Typewritten Address.
$10.00 Item #USA0650C3
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United States
Scott #650 1928
5c Aeronautics Conference.
Used.
$1.80 Item #USA0650S10
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United States
Scott #650 1928
5c Aeronautics Conference.
Unused hinged.
$1.75 Item #USA0650S15
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United States
Scott #650 1928
5c Aeronautics Conference Block.
Unused hinged with two never hinged and gum crease.
$10.00 Item #USA0650S16
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