This is an ORIGINAL 32A OBSOLETE rear site that was the initial 32A version. Like the later 32A, this sight was only available as a special order on the 1890 Winchester pump .22 rifles. This sight could also be special ordered for the 1902, 04, 06, 03 and 60 This part fits in the barrel rear dovetail on these Winchester 22 rifles and uses the 2C elevator (part st211-b wop). The sight has an extra long neck, DOES have the Winchester Patent date on the surface, and has a shallow notch. The portion where the attachment screw (st98) fits is much longer on this version. This sight is extremely rare and is almost impossible to find.