This Springfield Armory manufactured lock plate side screw is for the model 1873 Trapdoor rifle, cadet rifle or carbine and is in very good condition exhibiting a grayish brown patina and some specks of rust. (file photo)
Note: U.S. Springfield Armory model 1873 Trapdoor firearms with the following serial numbers have been observed with this part:
Rifle: 89597 & 130964