Largo Pattern Forged Brass Back Plate with Keyhole in Antique-By-Hand

This lovely Renaissance style back plate is based on Yale & Towne's "Largo" pattern. The circa 1910 design has been resized to fit modern pre-drilled doors, but also works with vintage mortise locks. It's made of top-quality forged brass, and comes in our exclusive Antique-By-Hand, a living finish that ages gracefully over time into a beautiful natural patina. For a complete Largo pattern door set, pair this back plate with the matching oval knobs (R-01NW-712749-ABH).

Dimensions: 8 1/4" H x 2 3/4" W. Inside collar diameter: 5/8". Center to center spacing of keyhole to knob collar: 2 1/4".

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.