I also have a 1917 DWM luger and a 1941 Walther P-38. I'm in the process of getting a 1940 Walther PP with matching numbers on the magazine.
Once you get the bug you can't stop! lol
I agree with getting stuff like that. If you buy good stuff, you can always get your money back. I have yet to use mine for a modern imported milsurp. I use mine for pre war S&Ws and Colts and WWI/WWII guns. While they're not very cheap, at least your money is in a safe place. Of course the argument can be made that any decent milsurp such as a mosin or a CZ 52 for example, will be harder to find and sought after someday, but then where will be the stuff that's harder to find and sought after presently?