Dear Eric,

Thank you for contacting Mearto with your appraisal inquiry.

The presented object appears to be a Winchester Model 1873 lever-action rifle with a 38cal. The octagonal barrel is marked WINCHESTER'S REPEATING ARMS. NEW HAVEN CONN U. S. A. / KING'S IMPROVEMENT PATENTED MARCH 29. 1866. OCTOBER 16 1860.
This piece is in good condition and there is no serious damage visible in the images provided.
A fair market estimation would be between 700 to 1.400 USD.
This estimate is based on actual recent past recorded auction sales of comparable items. Retail "asking prices" can be higher and may vary.

With kind regards,
Georg