I have found that the next line in the above advert is und Paul Scholberg Lttich. It notes that if you have spezial steel needs for sporting weapons, you will be well satisfied to source either Schilling or Scholberg. So, Carl Bittiner was a sourced for Bhler tube steel and I believe was at the same address as Paul Scholberg. V. Chr. Schilling was the only game in town early on for Poldi Antikorro and that is why we seen his initials on Baumgarten's Brenneke with Poldi Antikorro tubeset #280. I think these tubesets were sequential but don't know just how high the number grew. But Paul Scholberg was the source in Liege so if you have a sporting weapon with Poldi Antikorro tube steel proofed in Liege, the probability is very, very high that Paul Scholberg was sourced. Note on the Paul Scholberg boxlock below that his control mark(trademark/whatever) is rotated 90 on the underside of the left tube.
Poldi Antikorro steel tubeset #2944
Circa 1910, I've seen info suggesting that Scholberg & Delheid had a successor and I assume it to be Paul Scholberg as he seems to have hung out his shingle at this time and begins to apply from DRGMs in Germany.
432830 DRGM circa 1910
555??? DRGM circa 1912
566991 DRGM circa 1913
U.S. Of A. Patent 1982401 for 1932
I'm sure there are more & I'll add to the list.
Kind Regards,
Raimey
rse
