(Note: Measurements are outside max. dimensions unless stated otherwise).18th Century : Flat plate escutcheon with chamfered edges.OUTSIDEHeight 63mm. (2 1/2")Width 86mm. (3 3/8")Thickness (variable) 2mm. (1/16")KEYHOLEHeight 18mm. (11/16")Diam of hole 6.5mm. (1/4")Width 5.5mm. (3/16")Original would have had steep chamfered edges. Castings may require sharpening up with a needle file.