D.R.G.M. - Deutsches Reichsgebrauchsmuster or petty patent/novel idea. Since there is an associated number might be difficult to pen down but I'll look for the Roux underlever blitz type action. But the signal indicators may not be far enough back for the Meffert Treff, then it would be a Blitz/triggerplate action of sorts.
S in a chevron is the mark of sourcing from the Schilling forge. Z-M proof date is 1 up from the bottom where the ledger number is for that month - 8.07 above 647?
Yes, the V is actually a screwhead.
Cheers,
Raimey
rse
