Ed. Kettner of Coln, Bastman of Sweden, J.D. Moritz of Leipzig were all firearms merchants. I'm curious about the serial number and how you know it was made in 1910, but it sounds like a variation of the "Knock About" Model either as a transition lock or sidelock model, depending on the number of pins and their location. Parts are more than likely going to have to be fab-ed.

Kind Regards,

Raimey
rse