What is the value of an American made Walther PPKs pistol manufactured by Interarms?
There were two companies known as Interarms. The first was an
importer/exporter, formed in 1953. They did not manufacture
firearms.
The second - and current - Interarms is a subsidiary of Hi
Standard, and does not manufacture a PPK or PPK/S pistol. If what
you have is actually a Walther PPK/S, value could range anywhere
from $300 - $800, depending on specifics.