This buttplate is for L.C. Smith shotguns made by Hunter Arms Co. of Fulton, NY from 1890 to 1948.
Smith L.C. Buttplate lines no logo
5 3/32” x 1 21/32”
2 3/4” between screw holes c/c
21/32” from heel to top screw hole
1 15/32” wide across screw hole @ toe
