I found this Luger on the attic

[some_finn]

Originally posted by Ron Wood

but perhaps the LAS.6/1 on your Luger means "Laivastoasema" (I hope I spelled it correctly!) which I think means navy base.

I believe it is Lentoasema, airport.
I found a listing on the old unit abbreviations on the net.
Airport 6 was Viipuri (Viborg). It was a largish town/city (by 1940's Finnish standards) on the Karelian Isthmus and became a part of the Soviet Union after the war.

Viipuri in Wikipedia, in English