This Winchester manufactured early variation takedown extension is for the earlier model 1897 slide action shotgun and is in very good condition exhibiting a brownish gray patina with honest wear. The early variation takedown extension does have the scallop at the top for a sighting guide that the late variation lacks.   (file photo)

Note: Winchester model 1897 slide action shotguns with the following serial numbers have been observed with this part:

12 Gauge: 74589

16 Gauge: