I assume the name is CH. BERNTHEISEL FILS A NANCY? The name & the Balle term for Kugel makes me think a Belgian sourced sporting weapon and/or a French firearms mechant in Nancy, France.

A few of the craftsmen are Frederic Berntheisel was born in 1838 and I think was in Lunéville. Louis Berntheisel born in 1867 may have been the son and it looks like the firm faltered in 1924.

Anxious to see the marks

Kind Regards,

Raimey
rse