Marlin Firearms value

The weapon has: Marlin Firearms Co.
New Haven, Ct., U.S.A.
Pat. Feb 9, 1875
Ballard's Pat. Nov 5, 1861 It looks like a .22 caliber? Single shot?
There is embossing on the metal work. It is about 39.5 inches long.

Thanks in advance. Lonny