Reminds me of my black MOOLY-C motor, which was supposed to have been manufactured in 1949, but there's no way in heck that it works with 1949 cameras. The winding shaft is meant for under 400,000 cameras (that is, ones that have two notches in the winding shaft, rather than that crescent-shaped notch that's found in the 400,000+ cameras).
Don't know what the deal is, unless the black MOOLY's were really made during the war and not after the war. Could they still have been delivering wartime production cameras and accessories in 1949???