This Marlin manufactured scope mount dummy (plug) screw is for the Golden (39A & 39-A) Mountie lever action rimfire rifle and is in very good condition with light slot wear. (file photos)
Note: Marlin Golden (39A & 39-A) Mountie lever action rimfire rifles with the following serial numbers have beeen observed with this part:
Golden 39-A Mountie: (1958) R16162
Golden 39A Mountie: (1966) AB10631