A reputable gun dealer should have access to those Walther records that detailed the date of manufacture.
No such sn in the Walther convention
You will have to contact Walther
You will need to contact Walther
You will have to contact Walther to find out.
You will need to contact Walther.
You will need to contact Walther to find out.
No such serial number in the PPK/S range.
Impossible to answer without the serial number.
There are serial number tables that have been published.
Dieter Marschall's book on Walther has sn data in it.
You will can contact Walther, but probably 1943-45.
You will need to contact Walther to find out.