Egg & Dart Forged-Brass Back Plate

P. & F. Corbin's "Mantua" pattern of 1905 inspired this stately escutcheon plate. The lavish neo-classical design, originally produced in stamped brass or copper, is recreated in top-quality forged brass. At 2 5/8" wide it works on both pre-drilled doors and vintage mortise locks.

Dimensions: 8 3/4" H x 2 5/8" W. Inside collar diameter: 5/8".

How do I know what door knobs will work with a particular rosette or door plate? The knob shank diameter should be a little less than the inside collar diameter on the rosette.