The Walther PPK pistol was first released in 1931. During that time the Walther PPK pistol was popular amongst European police and civilians because it was reliable and concealable.
You will need to contact Walther to find out.
The Walther P99 was developed by the gun manufacturer Carl Walther GMBH Sportwaffen. The Walther P99 was made in the year 1996 and continues to be manufactured.
@1893
Walther arms Ulm/Donau, Germany
Most German wartime pistols and rifles were manufactured in 'blocks" of around 10,000. They would then proceed to the next letter. There could be two blocks of the same letter made in different years. You should have a manufacturer's code on the pistol like AC (Walther) or BYF (Mauser) and the year made after it. Such as BYF43. Look for these codes to get your info and go from there.
Try posting at p38forum.com
1931 to date
no published sn data.
the year for my 1911 is 1937.......................
It was first released November 19, 2006
Someone at p38forum.com might have the data you need.
Impossible to answer without the serial number.