good to see a discussion about Otto Bock scopes.
I am looking for some photos of the radius rings like on scope #5550.from the few,not so good,photos I have it looks like the claw on the front rings are different so would fit different bases.also the windage screw is different.also are the rings the same height,from base to scope tube.
about 30 years ago I saw an Otto Bock scope on a mauser 98 sporter using offset claw rings.the rifle used a DWM action and had the typical pre 1912 commercial proofs.the sporter stock was like that used on the preWW1 Mauser Co. Model B sporter.i did not see an Otto Bock marking on the barrel.the rifle serial was #140 and the scope was also marked #140 on the top of the tube in front of the rear ring.the Otto Bock scope was #5518.
