For sure, the frame is a mid-1942 Victory. The cylinder is not original. Probably an earlier cylinder chambered in .38 Special. There is a hand-stamped .38 SPL on the barrel, leads me to believe the barrel was originally marked .38 S&W CTG (the British military cartridge). Exactly what else is stamped on the barrel? The extractor rod knob also looks odd. Can you provide a better picture?