My apologies for not paying attention.
The barrels are Bernard I
Made by one of several Liege Bernards, or more likely acquired from a tube maker and just stamped 'EB'
https://docs.google.com/document/d/1fMs-Mn60ei9QsRcHT5Urm_eHobzJnaDKZiP3FP0fXb0/edit

I don't find an 'AC' in the Syndicat des Fabricants de Canons de Fusil de la Vesdre so Bro. Raimey's guess is better than mine.

Last edited by Drew Hause; 05/19/21 04:59 PM.