Although it's widely known Perkins is one of the best switch plate manufacturers, this one really stands out for it's extra thickness and bronze material. Stamps on back reads "PATENTED NOV 3 1903" and "THE PERKINS ELECTRIC SWITCH MFG BRIDGEPORT CT.
Condition: Great antique condition. Some surface wear commensurate with age.
Height: 4 1/2 inches
Width: 4 1/2 inches
Diameter of switch openings: 1/2 inch