Thanks everyone! I will keep the solvents at bay until you guy's identify what I have. Can I at least clean the bore? I can't tell if it is any good...full of dust and gunk.

I sent Michael some crude pictures. I will try to do better tonight.

The barrel is marked: A.O. NIEDNER
DOWAGIAC MICH

(2) lines. I will check the bottom of the barrel for a number tonight and try to find indentification marks on the stock.