[mrerick]

So - you have a "1940" date "42" code Mauser made Luger with sn 3060a.

Hallock and van de Kant's "The Mauser Parabellum" probably has the most detailed information about this period and variation.

1940 production ran from the "y" block through the "ns" block to the "n" block at the end of the year. Total of 160,000 pistols made that year with those markings. "Y" and "Z" blocks had close to 15,000 serial numbers built on 1939 receivers, and 5,000 built on "1940" receivers.

That should put 3036a at about the 18,000th "1940" date Luger made that year. The math works out to about the 48th day of the year - so figure between February and March, 1940 for your gun. They were done in batches, so it's hard to say exactly - and factory records have not surfaced with exact data.