- C49 MNH 1957 6c Boeing B-52 Stratofortress United States Air Force defense planeOpens in a new window or tabucircollectibles (194) 100%
- 1957 - SC# C49 - AIRMAIL - AIR FORCE ISSUE - PLATE BLOCK OF 4Opens in a new window or tabcrobarstampsetc (172) 100%