Probably not in MN State
Simpons LTD has this very nice (and pricy) 1939 dated holster :
http://www.simpsonltd.com/product_in...oducts_id=4196
They show up from time to time on e-Bay in the 1939 and 1940 dates...as well.
Finding a numbered matching magazine will take time and maybe years.
You might consider looking for the "correct" magazine for your pistol and not worry about the serial number. It is always nice to have 2 magazines with each luger. One in your pistol and one in the spare pouch on the holster.
In the theater of war when guns were fired and empty magazines were routinely dropped to the ground to load another, what is the chance that a soldier picked up his emties ?
Much "boosting" of forced-match magaines have been going on by Waffenfabrik-USA for many, many years to inflate the selling price of "matched" luger rigs. Probably elsewere in the world as well.
I see many of these "snakes" in this business running around and buying up all the un-numbered wooden and aluminum bottomed magazines at all the gun shows I attend. Then you see these same crooks or their business partners selling "matched" rigs later on their web sites and mail-out lists; usually in a mint-conditioned luger rig that looks like it left the factory (or someone's factory) just yesterday.