Astute Observation & yes a Sauer 3 Ringe Weapons Grade Steel Tubeset. But I am not sure of Franz Keßler, although it is a possibility. There are many F. K. mechanics that could have left their fingerprints. The key is the >>Achillies<< Trademark & the name >>Firma Suhler Waffen Export Haus<<, which is a bit odd. Suhler Waffen Haus was a name by which Fritz Wagner was reorganized in 1922 by August Will, Gustav Will.
With the 1/2 pipe side frame reinforcement, that is a lot of gun.... Interesting how the >>Sea-Shells<< are formed on the top of the frame.
Hochachtungsvoll,
Raimey
rse
