Dear Mark,

Thank you for your help and patience.

The presented object appears to be a Model 1892 Winchester lever-action rifle. This iconic rifle is marked on the octagonal barrel with "Model 1892/ Winchester/ Pat. Oct.14.1884". It has a 32 WCF caliber and the serial number 129713 indicate that it was made in the year 1899.
This piece is in medium condition and there is no serious damage visible in the images provided.
A fair market estimation would be between 600 to 1000 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,
George