Exactly, Marcus,
Thank you so much, you definitely got the point!
That was the kind of input I had been waiting for: an originally plain military Prussian wheellock saddle carbine , Suhl, ca. 1670, the saddle bar and ring now missing, and embellished in Poland in around 1700 in the obsolete Renaissance Mannerism style of ca. 1580-1600.
Attached please find images of two Suhl wheellock carbines from the same series retaining their original unaltered appearance, with their plain walnut full stocks, saddle bars and rings.
Best,
m