WWII handgun 7.65cal

Question
My grandfather took this gun from a German in the war. I would like to find a clip for it, but only have the serial number. No other markings are on the gun- other than the German swastika/eagle and "cal 7.65" on one side. Can you find any information by using the serial number? Serial no. 455886

Answer
The serial number doesn't help.
In 32 acp (7.65mm) its like a Walther PP.
Does it look like this?
http://en.wikipedia.org/wiki/Walther_PP

This forum would be a good find out more about what you have.
http://www.waltherforums.com/

I would post a photo and ask for an id of it.