HAIRSBER?? I'd say Sauer peddled the 2 barrel set and the fitted case is authentic. I'm a huge case fan and really like the case by the way. Any better idea of the letters after "nach" like L?? ggg?
What's the difference in tube length in the set, 2 inches? Is one set 28" and the other 26"?
For now I think Sauer made the tube with the Henry rifling and imported the scattergun pattern welded tubes from Belgium. Now they could have easily have imported the rifled tube from Belgium also. But I don't think they did on their drillings. I would say that it was cast, but then again I don't see a Guss Stahl stamp either. If it were fluid and considering the time period, why wasn't there a advertising blitz with fluid steel stamped all over it? And how would you convince some to choose a non-pattern welded type with the other 3 tubes being pattern welded? Today if someone handed you a double with 2 distinctly different tubes, wouldn't you ask "Why???"? Maybe they wanted to keep fluid steel a secret for another year or so???? I think Sauer made it but I know they had a forge for components but an curious where their hammer forge was or if they sourced some of the work to the Jaeger klan of Johann Georg, Sr., Johann Georg, Jr. & Valtin Jaeger. But then again there's the cypher of the "CRF"(Funk as a wild guess) that is seen of tube of this period.
Kind Regards,
Raimey
rse