I need help identifying a PPK that was supposed to be a WW2 bring back.  Any help would be appreciated.

The slide is marked Waffenfabrik Walker Zella Mehlis Thur Mod PPK Walther Patent Cat 7.62 m/m

Serial number is 933xxx on the frame and I cant find any serial numbers on the magazine or slide.  The slide, barrel breech and barrel tip are marked with an N with a crown over it.  Thanks!

Crown N would indicate pre nazi production commercial. If you take the slide off you may find the serial number scratched into the inside of the slide. I think the mag should be blank unless it is military or police marked?

That gun was made prior to 1940, carefully remove slide, serial number will be scratched on inside opposite of ejection port. Magazine will be marked with walther banner. Finish will be high polish blue, 60% safety, 7.65 mm, (32 caliber). Be careful with the grips, they crack easily.