Dear Ken,

Thank you for contacting Mearto with your appraisal inquiry.

The presented object appears to be a Colt Police Positive Special Revolver with a 38 4" barrel. The serial number 173064 dates this revolver into the year 1919.
This piece is in damaged condition and there is damage visible on the grip in the images provided.
A fair market estimation would be between 100 to 250 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