I bought an old BBF combo ("vertical cape gun") in Germany back in December. Very little info, no picture, but the price was modest at about $300 so I took the risk. The gun came here today. It looks almost exactly like RickD's. Unmarked outside but marked WK in script on the barrels (Wilhelm Kelber?). Proof date 5/26 (?- a bit fuzzy) for May 1926. Serial number 15012. Rifle barrel marked 7.8/57 and 15g so 8x57 IR as marked on the sale papers should be correct; shotgun barrel is the usual 16g 65mm.
The frame is almost same as RickD's except two details: on mine the upper part of the clamshell is more curved, and there is an extra small screw securing the front screw. There is a single Greener crossbolt, on the right side. Following Raimey's research this should be a Schmidt & Habermann or a Greifelt design if I understand correctly. As I remember I once saw the same type of action used on a Borovnik Ferlach BBF dated to the 1930s.
With kind regards,
Jani
