once more.....
Otto Bock was founded in 1883, he was master in gunsmithing, later purveyor to the court. His shop was called "Gewehrfabrik", like every second shop at this time. It was necessary around the 1910 to have 3 workers to call an shop "Fabrik". In 1913 he had working 4 peoples in his shop. The main art to work was to buy guns in Suhl and Zella Mehlis, also he bought "in the white" guns and built them up like the customer wanted. Absolutely usual art to work at this decade.
As you know the mounting of sniper scopes was outsourced form Amberg and Spandau for several reasons and given to private Firms like Bock or Miller&Greis and others.
Jackenkroll was founded 1894 and was in the optical buiseness with lenses for objektivs, and also theire compass line was well known before WW1.
As usual with begin of WW1 the line was opened for military used parts and optics.
Jackenkroll had in their finacial balance for 1912 122 fabrikworkers, 13 commercial employes and an construction bureau.
So it makes no sense that Bock had an production line for scopes, even that he sell this production line to Jackenkroll.
There is not one little notice in several archives about an relationsship or what ever between Bock and Jackenkroll.
The only thing that makes sense is always the same. Bock bought scopes, signed them and sold them. An thing that happens every day in our times, and also happened at this time.
Please excuse that i had the cheek to show some scopes, it will never again happen.
For me the discussion is closed, it is hard to discuss on this different level.
Facts are the only truth, not wishful thinking.