Crosshatched muzzle. Is the term >>Nitro<< stamped on the sides of the tubes. Also a Zella Mehlis concern with the name Wolff & Anschtz was active during this period @ Marktstrae 9. I would harzard a guess it was J. Wolff and some Anschtz mechanic, maybe Brno? So maybe the antlered beast is that of Wolff & Anschtz but I have zero proof for the moment.

Cheers,

Raimey
rse