The Walther P38 with a serial number 6660 was likely made in 1940. The P38 was produced during World War II, and early production years can be identified through their serial numbers. However, for precise dating, additional information such as the manufacturing code and proof marks would be useful.
There are serial number tables that have been published.
You will need to contact Walther to find out.
Need to know what model and caliber.
Walthers were made in 2 different locations in Germany, and in France. we need to know the model of your "Walther gun".
The Walther P4, with the serial number 600092, was likely produced in the early 1980s. Walther P4 models were manufactured from 1970 to approximately 1988. For a more precise date, you would need to consult a detailed production log or database specific to Walther firearms.
Impossible to answer withou a serial number and DETAILED DESCRIPTION of all markings.
Germany. 1970's or so
Your Marlin was made in the year 1973.
Someone at the p38forum.com might be able to help you.
Someone on p38forum.com might be able to help
Need a detailed description of ALL markings.
Serial number and or proof marks