[HerrKaiser]

I would talk I GT and see if he would be willing to breathe and perform his magic on your defective magazine.
Your FXO magazine is known as exactly that to collectors. Those magazines were produced towards the end of Luger production in the war. All 3 are from 1930 or later since they’re aluminum bottomed.

As for your I magazine, that cross indicates that it was a military spare magazine. However, it seems that someone ground off the SN for whatever reason. The 83 and 63 marks on your magazines are inspector stamps.