These are Black Panther Vindicators during the filming of Dive Bomber. In 1939 the squadron was designated VB-4 with green tailed SB2Us for service on Ranger. Ranger moved to the Atlantic taking Saratoga's SB2U squadron (VB-3 Tophatters) with her; VB-4 then moved to Saratoga and switched to white tails.
One of the movie's plot points involved brother pilots each having a Tophatter lighter. Since the Tophatters were now on the wrong coast for the filmakers, the black panther fuselage marking (under the observer's canopy) was overpainted with temporary aluminum paint and a ringed top hat was painted under the pilot's cockpit. (The fresh aluminum paint is obvious in several of the movie scenes.) Additionally, VB-4 became VB-3 in July 1939, which might partially explain the revised fuselage codes.
After the movie finished, the top hat markings and temporary aluminum paint were removed, returning the black panther to its proper position.
BTW, a fun movie, despite the hokie pseudo-science examination of flight medicine. Lots of colorful aircraft filmed during the transition from highly visible marking to Light Gray camouflage.
Cheers,
Dana