What can you tell me?

[Surpmil]

My guess is they were using up left-over bits and pieces. I had one in VG shape and it was a fright: heavy, overly long, absolutely no attempt at weatherproofing, crude adjustments (inferior to the WWI types) and a lot of spherical distortion. Probably some of the lenses were from other types of instruments or were 'seconds' from war production. The knob had a wide groove in the side where the knurling would normally be, and a screw projecting its tip into this groove was all that kept the lead screw from winding right out of the reticule block! So when you 'changed direction' on the lead screw, it was a bit like a very worn machine tool where the feed screw nut allows you to free-wheel until it takes up the slack again!

A rather sad adieu from a company that built some quality kit.

And I think mine had the same PH rings as yours when I got it. Still have the rings at least, they're nicely made.