WTK: Luger mag. question

I have a byf '42 Luger rig with black plastic grips (Black Widow). The mag with the gun is properly waffenampted but has no serial-numbers--and has an shiny aluminum bottom (not black plastic). Can this be considered the "correct" mag for this gun, or does the mag need to be either serial-numbered to the gun OR black plastic and un-numbered to be correct?


The books I've read don't have much info. about what sorts of mags the later-war guns had, and if they were serial numbered or not.


Thanks for helping a newbie.


Will