Well, It’s actually a sidelock (not a very complex one) and the pins on top are firing pin retainer screws. What is this prima kruppscher?
Obviously seen Krupp stahl but scher? Also plate on inside says 1? Maybe size of plate or model? Guessing again. What might you fellas think about this one?
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]