This was the Winchester factory issued ORIGINAL 77D front sight, the standard for Winchester 1906, 1903, and 1904, Model 53 and 55 Winchester 22 rifles, and was a special order on the 1904. Sight is in good condition and tare the correct 0.335 inches high with correct Winchester dovetail measurements. This was also a special order sight for other rifles, and can be found on 1885, 1895, 1894, and other lever-action rifles.