9/16″ LD-K-3 Knob — an exact, museum-quality copy of a specific period original, this Londonderry knob is one of the finest reproductions in the world. Cast in solid brass to the original profiles and weight, it delivers authentic heft and historic detail even at a small interior scale. Perfect for desks, cabinets, and period restorations, the LD-K-3 reproduces the look, feel, and craftsmanship of the original piece so faithfully it reads as history on the hand. Each knob is cast to order to ensure crisp detail and superior finish; lead time is roughly 4 weeks (this is an estimate, not a guaranteed ship date). Choose the LD-K-3 for unmatched authenticity and lasting quality when only a true period reproduction will do.