Another clamp type mount - this one on both ends - on a Stevens pocket rifle with an unidentified (Wollensak?) scope. This one lets me shoot very accurately.

I agree. They're neat, but I think homemade by someone with some machining skills.

I appreciate the feed back very much. Both front clamps are of such quality of finish that I am still convinced that they were made by some sort of production line or, at lease, a limited run. MrTipUp: The pocket rifle front clamp is d&t'd for a set screw but none is present and there is no marring on the tube to indicate that it ever was, The tube is held solid anyway, apparently by the clamping action on the barrel, as the rear mount performs as expected - with appropriate give on the tension plunger. If the rifle rear mount had anything other than big box DIY store screws, I would be less prone to believe that it is indeed "home made."