Georgi on transition from Krupp Steel to Roechling on Daly's:
»From 1917 - until the early 1920s, Daly guns are not available in the catalogs . (The earliest catalog I own that shows their re-appearance is 1924.) From 1924 - approx 1930, the Witten steel is still there but Krupp "special steel" has been replaced by Roechling "special steel."«
»Sempert & Krieghoff(Ludwig, Sr.) offered Roechling steel tubes, as did Merkel, and were possibly the only game in town for Roechling. Heinrich Krieghoff, Ludwig’s 2nd son, left S.&K. in 1916 to hang out his own shingle and by 1919 either completed the purchase of Val. Chr. Schilling’s(Albert, Moritz & Walter) tooling or purchased Schilling’s tooling. WWI had ended and so did H.A. Lindner’s handi-work. I’m sure his network fell to the wayside and someone at S, D & G along with a contact in Suhl had to keep it together. Lugwig Krieghoff, Sr. expired in 1924 and Heinrich Krieghoff brought S.& K. under his gun making umbrella but Sempert & Krieghoff/Krieghoff-Waffen may have continued until at least 10.10.1925 as per a catalogue. Schuler and S. & K. had a relationship earlier as Schuler sourced his Mauser’s from S. & K. and could have easily sourced tubes from S.&K. or Krieghoff-Waffen«
So Post WWII, there was a shift in the use of tube steel from Krupp to Roechling, which had developed the Electric Furnaces in 1912 or right before WWI.
https://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=138360&page=allToo, there was a new rule or law that became effective in 1924 that weapons platforms were to be dated and that's why the Suhl Proof Facility followed the Z-M Proof Facility in dating their arms. The Z-M Proof Facility had been doing it since the early 1900s.
Now not by any stretch of the imagination am I saying the Subject longarm is a Daly.
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