Found: Simson & Co. SUHL Bayonet

[Patrick Chadwick]

"Are you confirming in this instance, Patrick, that the "Co." is an abbreviation of "Company" and not an abbreviation of a name? "

Yes. Simson & Co. was established in 1856, and lasted until the 1930s, when the Simsons (a Jewish family) were driven out by the Nazis. The factory was renamed "Gustlhoff-Werke".