An ORIGINAL Winchester Factory issue No 22F SPORTING REAR SIGHT. These sights have smooth buckhorn sides and were placed on a variety of pre-64 Winchester rifles, after it replaced the Model No. 22B. Especially on Models 53, 54, and 55 Winchesters. The sight is almost a full-buckhorn configuration with no screw in the front adjustable V-notch in the middle. Bluing still strong and sight is in excellent condition. The early elevator (st122 wop) is correct for this rear sight.