The one on the left is nickle colored, serial number 848473N, a round needle hole, and has finer lettering and finer knurling and larger screw heads than the other one.
The one on the right is brass or gold colored, serial number 34854, a round needle hole, and has thicker lettering and coarser knurling and smaller screw heads than the other one.
Or maybe neither of these is the correct variation?
Thanks,
Greg


