This S/42 1936 is at a LGS and I’ve asked a couple forum members here and the Luger forum for opinions. Figured I’d post here as well to see if I could get more opinions and hopefully figure this out. I’ll try to get better photos tomorrow but they won’t allow me to disassemble for fear of damage. I don’t believe the LGS to be nefarious but they only know what they know and they mostly deal in modern firearms. All visible numbers match including the two mags.