I can't help you with the model name or number, but I have a very well preserved Miller light from 1950, of which I can post photos. For now, here's a couple photos of that lamp on a bike:



Your light was intended to mount on the right side of the fork. The push button to open the bezel would be on the right, the hinge on the left, and the "MILLER" lozenge on top of the bezel. So that puts the two mounting holes on the underneath of the lamp body. I will post photos of the lamp mount.

The parabolic reflector appears to have been rotated 90 degrees; the off-center bulb is typically at the top, as you see in my photo.