A beautifully articulated early 20th‑century O.C. White industrial lamp, featuring the company’s iconic cast‑iron joints, smooth pivoting arms, and a clamp base that allows the fixture to function as either a desk lamp or a wall‑mounted task light. This is classic O.C. White engineering: rugged, precise, and built for decades of machine‑shop and drafting use. The prismatic glass shade is a later Holophane‑style replacement, chosen specifically to echo the look and light quality of the shades originally used on these fixtures. Its ribbed glass throws a warm, refracted glow that complements the lamp’s industrial character beautifully. The metalwork retains an honest, time‑earned patina throughout — the kind of surface collectors look for — while the lamp remains fully functional and ready for daily use. A twisted cloth cord completes the period‑appropriate presentation. - Maker: O.C. White Co., Worcester, MA - Era: Early 1900s - Materials: Cast iron, steel, brass socket, prismatic glass shade (later) - Features: Fully adjustable arm, patented joints, clamp base for desk or wall mounting - Condition: Beautiful patina consistent with age; shade is a later match; new key in socket; rewired for modern use A striking, versatile piece of American industrial history — perfect for a studio, office, or thoughtfully curated interior