Manufactured in 1883. Two-line address on top of the barrel with standard patent markings on the left side of the frame. The front sight is a Freund & Bro. "famous muzzle sight" and is marked "FREUND'S/-PATENT-". Freund & Bro. patented this sight on April 17, 1877 and where attempting to make better front sight that would work as well in low light as it did in the sun. For more information and the patent drawing see page 176/77 of "Freund & Bro.: Pioneer Gunmakers to the West" by F. J. Pablo Balentine. A sight such as this would have been highly desirable for anyone, lawmen and outlaw alike, who depended on the accuracy of their sidearm on the Frontier. A piece of Old West history!

Fine, retaining 70% original nickel finish with some areas showing frosting. Some pitting is present just ahead of and on the front of the cylinder with light oxidation scattered throughout. The grips are very good with some shrinkage, a chip to the bottom of the left panel, and an overall attractive aged look. Mechanically fine. An interesting Colt Model 1877 Thunderer with a desirable period modification, giving it the true feel of a Frontier firearm!