I like these old scopes.
Will start with a personal favorite, and then add to this as I can.
https://i.imgur.com/knSkaJw.jpg
Early exposed turrets B-4 rimfire scope, shown here with the factory end-caps.
This *may* be the second variant~ when I was researching it I found unconfirmed rumblings of an earlier turret style closer to the old "G" style. I'll take that with a moderately healthy pinch of salt :icon_wink: as I have not seen everything yet when it comes to these old scopes.
It holds a good zero and has accounted for quite a few grouse on my various .22's and air rifles.
https://i.imgur.com/BogQ0bt.jpg
Shown with the caps removed.
https://i.imgur.com/e4he2KS.jpg
Mounted here on one of my CO-2 airgun plinkers. It will launch expired 12 ga. hulls with authority at 15-25 yards provided I do my part, and the wind co-operates :icon_tongue:
https://i.imgur.com/ZqT5TlE.jpg
El Paso roll-mark just ahead of the eye-bell element's threads.
More to follow...
Regards,
Doc Sharptail