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 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 piece of Old West history!