This is a vintage cast iron Stanley No.2358 Commercial Miter Box with a 25" Miter Back Saw. The miter box is made in the United States and is an original vintage piece. The saw is a featured refinement and is designed for carpentry and woodworking. The brand is Stanley and the product has not been modified.
It does have one missing set screw and one spring clip is snapped off at end.
Pictures show missing set screw and snapped spring additional pictures show what the two items look like that need to be replaced.