not an expert but..Ill throw you a bone
the gun pictured is an alphabet commercial made 1919 to 1929ish for commercial export in 7.65 because of treaty. most mass produced model made. least desirable. they did rework alot of guns for export/commercial sales in the 20;s. They commercially sold alot of models in the 20's artys carbines navys...sneaks are foggy for me I know I read someone explain it but I think sneaks are a certain time period and they dont have manufacture logos on the toggle ?? you have an early luger with an ideal stock why do you care for these?