5/16″ LD-K-1 Knob — a true-to-period cast brass reproduction from our Londonderry Brasses collection. Each knob is an exact copy of a specific period original, faithfully reproduced to capture the scale, profile, and patina of historic hardware. Even at 5/16″, this interior desk knob is notably hefty and tactile; you’ll feel the quality and see the history in every detail. These are the finest reproductions in the world, finished to museum standards for authenticity and durability. Cast to order to ensure precision and care, lead time is roughly 4 weeks (please note this is an estimate, not a guaranteed ship date). Ideal for restoration projects, high-end homes, and heritage interiors, the LD-K-1 pairs beautifully with plain or decorative backplates and other Londonderry Brasses fittings. Order your handcrafted, period-accurate knob today to secure one of the world’s premier reproductions.