Modern and Contemporary Outdoor Sculpture Conservation: Challenges and Advances
Locking Piece (1963–64) by Henry Moore, Tate, London. Moore's later bronzes left his West Berlin foundry patinated in a range of colors and sealed with a polyurethane coating. When the coating breaks down in sunlight and weathering, the exposed bronze darkens and oxidizes unevenly. Reproduced by permission of the Henry Moore Foundation.