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Old 25th Jun 2014, 22:32
  #4664 (permalink)  
Noyade
 
Join Date: May 2009
Location: New South Wales
Age: 63
Posts: 9,764
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Some clues then...

It's a Pratt and Whitney R-1535-7 engine.
Circa 1936.
The aircraft is serving with the 118th Observation Squadron Guard.
Photographed in the maintenance hangar at Brainart Field, Hartford.
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