This Lyman No. 57 receiver peep sight was manufactured betwwen 1951 and 1974 and features the coin slotted Stayset adjustment knobs, steel base and is marked "Lyman / 57WJS" which indicates that this sight is for the Remington model 660, 700, 721, 722 & 725 and Winchester model 54 and pre-64 model 70 bolt action rifles. The overall condition is very good with light wear. The mounting screws are not included. (file photo)
