Allow me to kindly answer this question with my final pictures of interest.
In conclusion, this is more than likely a post-war pistol, half posing as a pre-war?
The only reason I can think of where someone would want to do this is to sell it for more than the standard value. I can't see a collector doing it! But then is the difference in cost between a pre and post
that different that it would warrant etching a false serial number into it? Who knows.