1969-1984
No such serial number in the PPK/S range.
There are serial number tables that have been published.
You might have better luck on P38forum.com
Serial number and or proof marks
plenty of difference the ppks is a shortened version of the walther pp - it is not a ppk - thanks to stupid govt regulations
The PPK/s is a PP with a PPK slide.
100-1000 without more information.
no published sn data.
100-1000 USD depending on specifics
Someone on the P38forum.com might have access to that kind of data.
It's not designed to do so. (No.)
Anywhere from 100 to multiple thousnands of USD