A U.S. Navy Grumman F4F <i>Wildcat</i> at Naval Air Station Anacostia, Washington D.C. (USA), wearing flight test markings. The original photograph is dated 21 April 1942, which is not supported by the post-May 1942 style national insignia on this, and the other planes present, especially the British Royal Navy Vought F4U <i>Corsair</i> Mark I, the first of which was delivered in May 1943. It also identifies the plane as an F4F-4B model. However, the engine cowling seen here is of the type used on the Pratt &amp; Whitney R-1830 powered F4F-3 and F4F-4 models, not that of the Wright R-1820 powered F4F-4B. Also note that the aircraft has only 4 machine guns which would identify it as a General Motors FM-1.
mid 1943 <div style="display: none;">date QS:P571,+1943-00-00T00:00:00Z/9,P4241,Q40719748</div>
U.S. Navy photo <a rel="nofollow" class="external text" href="https://www.history.navy.mil/content/history/nhhc/our-collections/photography/numerical-list-of-images/nhhc-series/nh-series/NH-89000/NH-89674.html">NH 89674</a>