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Keystone B-6A bomber Y1B-4 Date 12-22-31 Stamped Official Copy Air Forces For Sale
![Keystone B-6A bomber Y1B-4 Date 12-22-31 Stamped Official Copy Air Forces Keystone B-6A bomber Y1B-4 Date 12-22-31 Stamped Official Copy Air Forces](img-large/g/DvoAAOSw56RlylBr/s-l1600/Keystone-B-6A-bomber-Y1B-4-Date-12-22-31-Stamped-O.jpg)
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Keystone B-6A bomber Y1B-4 Date 12-22-31 Stamped Official Copy Air Forces: $39.99
Stamped on the back Official photograph Air forces Base photographic Laboratory March Air Force Base California
The Douglas Dolphin is an American amphibious flying boat. While only 58 were built, they served a wide variety of roles including private air yacht, airliner, military transport, and search and rescue.
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