Pictures of old Neil optical sights

[Valleysniper]

My set is marked Barnett Optical Sight inside case lid and not anywhere as nice and clear as your marking. Anyway interesting to see that your front lens has a presumably etched and filled set of crosshairs instead of the normally seen central aiming black infilled dot. Also your rear sight only seems to start off at 500 Yards instead of the normal 200, 400, 500 and 600 yard markings, what other range markings and aperture peep holes are on the rear sight? Perhaps you have a long range example?

Mine also has the pat 1850/15 marking.

Anyone have a Neil marked case one?

Finally another bit of useless information if you have a set with busted lenses, I have had my set read and their prescription is:

Front Lens + 1.00 Dioptre Sphere
Rear Lens - 2.50 Dioptre Sphere