B66-348 BRITISH PLOW PLANE. Silcock & Co. The earliest known metal plow, patented by James Silcock in 1844. Unlike most examples, it still has its original brass plaque on the skate, and is also marked on the toe with "112." Cast iron frame with beech tote and skate attachment, original depth stop and one original cutter. From the collection of David Jeffers. Good+ 1000-2000