As near as I can determine the 1st number of the serial number is the last digit of the year zit was manufactured 2 -1942 3 - 1943 etc. Which would make your guns manufacture date 1945.
This is a best guess. 1945 was the end of W.W. I I and a lot of records were lost or destroyed making it difficult, at best, to deter mine manufacture date.
Here is a website that may be helpful.
Pistols of the German Wehrmacht
Bob
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