The windage knob is not marked NM,, is the base marked anything on the right ear?
If that windage knob screws into that base, then the base is not a NM one.An NM base and NM windage knob have fine threads.
Only NM part I see is the aperture.
The elevation pinion is made by New Haven Clock. They made both M1 and M14 pinions. Does it have an M on it?