Dieter Marschall has a book out that has some sn data in it.
You will need to contact Walther
You will have to contact Walther to find out.
You will need to contact Walther.
1938
@1944
You will can contact Walther, but probably 1943-45.
Impossible to answer without the serial number.
70-85
@ late 70's
Roughly 1940-1945
Possibly late 30s
Dieter Marschall's book has serial number data in it. Probably 1945.