I technically own 2 examples of the Walther PPK/S, but they're both made by different manufacturers, have a different finish, and are chambered in different cartridges.
1.) PPK/S
Manufacturer: Walther
Finish: Black
Caliber: .22LR
2.) PPK/S
Manufacturer: Smith & Wesson
Finish: Polished Stainless Steel
Caliber: .380 ACP
For those who may be confused right now, the Walther PPK has been manufactured by many different manufacturers over the years besides just Walther themselves, namely because after WWII they weren't allowed to produce firearms domestically for awhile, so it was licensed out to Manurhin of France, the the Gun Control Act of 1968 banned the PPK from being imported into the United States, so first they designed a new model known as the PPK/S in order to score the necessary points as a sporting gun to be imported, then eventually in was manufactured in the US by Ranger under the license of Interarms/Walther, then from the early 2000s to about 2014 it was manufactured by Smith & Wesson who was the importer of all Walther products at the time, and now it's made by Walther's US branch, Walther Arms USA out of Fort Smith, Arkansas.