This Winchester manufactured early variation peep sight plug screw (filler screw) is for the top tang on the model 1890 slide action rimfire rifle and is in very good condition exhibiting a brownish gray patina with light wear. (file photo)

Note: Winchester model 1890 slide action rimfire rifles with the following calibers and serial numbers have been observed with this part: 16902, 191868, 206791 & 637738

22 Short: 307126 & 392480

22 Long: 790566

22 W.R.F.: 261432 & 292176