"Dive Bomber" movie (1941)
According to "the New Ryan" by Ev Cassagneres there were two Ryan STAs used in this movie.
The one shown above with the dummy radial cowling was s/n 139, NC16039.
The other, also in RAF colours and coded "RX-P", was s/no. 128, NC17305. This has the standard in-line Menasco cowling and an enclosed sliding canopy.
Whilst the Ryan ST/PT series were obviously not fighter planes in a true sense, armed versions were sold to China, Guatemala and Honduras.
Tony Broadhurst