Walther PP .32 Value & History: A Collector's Guide

Question
I have a Walther PP .32 cal (as described below) and I'm wondering if it has a remarkable history and about how much it is worth?

Thank you.

Slide reads:
Carl Walther Waffenfabrik Ulm/Do.
Modell PP Cal. 7,65 mm

Other marks:
Eagle N on Slide, Barrel, and Frame
Standing Loin Crest on frame
Interrarms light stamp on frame
87155 serial number stamped on frame
155 stamped on slide

Condition:
Worn off bluing at barrel end of frame and bottom of butt.  Also, some corrosion on barrel end of frame.


Answer
By virtue of marlings it was made between 1939 and 1945.  Being an import doesn't help the value. Most were in .32, though they were made in .25, .22, .380 as well. 60% condition is worth about $200., in 100% about $650., if it was in 100% in .25 cal it is worth about $3,500.. Thanks.