You can go and type in "Walther PP" in the search box in Wikipedia. But if you want to know the answer right now it is; Started producing 1929-present and it has been in service 1935-present.
You will have to contact Walther to find out.
Impossible to answer without the serial number.
Walther is a German company. However, some Walther pistols have been made in France and in US by Smith and Wesson under license.
Depends on when it was made.
The Walther PP was made in 5 different calibers- ONE of which was .32 Auto. If the gun is question is a .32, it can shoot .32 auto. If another caliber- no.
The Walther PP with serial number 709157 was produced in 1961. The Walther PP series has a date of manufacture that can be determined based on the serial number, and this specific number falls within the production range for that year. For precise verification, consulting a dedicated Walther firearm database or historical records would provide the most accurate information.
Someone at p38forum.com might be able to help.
You will need to contact Walther
No such sn used by Walther.
You will need to contact Walther.
The PPK/s is a PP with a PPK slide.
You will need to find a copy of Dieter Marschalls book to get the answer.