Some limited aircraft speculation this photo on this site:
https://imgur.com/gallery/BcaoGax
"I wasn't able to dig up any context for this one and the fact that no tail markings are visible makes it even harder to identify the aircraft, however it is clearly a "solid" nosed model (as opposed to the earlier glazed nose model) of the factory manufactured variety, not a field modification where the glazed nose was painted over, making it an A-20G manufactured from February 1943. There also appears to be no power driven dorsal turret, making it one of the first 750 such aircraft manufactured, and since it is armed with .50 cal machine guns and not cannon, not one of the first 250 of the series
Also of note is the wing insignia that lacks the horizontal bars which became standard in June 1943, which gives us a fairly narrow time window for the image. The fact that the marking is only present on the left wing also dates the image to post February 1943."