Thanks! It's interesting that Weihrauch used a similar design in their early days, i.e. the windage adjuster built into the sight base, and elevation in a round "turret." HW switched to a more modern mechanism in the late 1950's, with both adjusters in the upper part, but BSF never modernized theirs.Here's the BSF diopter flanked by HW sights - early 50's on the left, mid 60's on the right.
Copied from our friends over at the Canadian airgun forum:Bayerische Sportswaffen Fabriken (BSF) of Erlangen, Germany founded in 1935 but only prototypes produced until after WW2 owned by the Schutt family until 1983 when bought by Herr Gayer. (The German exporter was Wilsker and Co and hence many were sold in the US, as Wischo particularly by Beeman who was pioneering adult airguns from mid 1970’s) I would add that BSF guns were also sold under the Burgo and Bavaria brand names.
Yogi, you are correct; we're talking two different transactions. The purchase by the Gayer family in 1983 resulted in a "last gasp" under the BSF name - many of the guns were re-issued with new stock designs, muzzle weights, and other detail changes. But this did not last, and it was a few years later that Weihrauch bought BSF.HW's acquisition resulted in the hybrid guns seen here under the "Marksman" name in around 1989 - 92 or thereabouts, including the two discussed in the recent post linked below. I think it is correct that the HW 85 / R10 and HW 98 were also fallout from this change.https://www.gatewaytoairguns.org/GTA/index.php?topic=208544.0