Angco,
Does your PPK say "Made in USA" or "Under license From"? If so than it's not German.
If it has an Eagle over N (or crown over N for a really early version) than it's German.
If it says Manhurin, than it was made in France. However not all French made PPK's say Manhurin.
If you can post a picture and give me at least the first 3 digits of your serial number, I may be able to tell you where it was made.
P99