Welcome to the forum.

Based on the serial number, this is a WW II Victory model from the summer of 1942 that has been commercially refinished after the war. Very nicely and professionally done compared to most I've seen.

The 4" barrel should mean that the caliber stamping on the barrel says 38 S&W SPECIAL CTG, making it the US variant. If it says 38 S&W CTG, it would be a British Service version with a shortened barrel, always a possibility with a refinished one. Does it have a property stamping on the topstrap?