David, sorry I wasn't clear. What I meant to say is, try to find a "fxo" magazine with a "t" suffix, but a different numerical value than your pistol. For instance, a "fxo" magazine marked "1234t or 4321t +" would be a proper magazine. While it's not matching, it's as close as you can get without it being matching!
There are several different magazine construction and finish types and many different inspection marks used by Mauser between 1934 and 1942. If you look in the section on Luger Accessories and my post on Mauser Magazine identification, you may get a better idea on the procedures.
While I have Lugers with a matching magazine, all the rest have "proper" magazines. That was my goal to begin.
I hope this answers your question. Good Luck!!
