Zao Wou-Ki (naturalized French Chinese, 1920-2013) Wolves under the Moon. 1950. Etching and soft varnish. 168x238mm. Ågerup23. Printed in colors. Very fine proof on white vellum, annotated "épreuve en vertte [sic]", signed and dated in pencil. Some light foxing and slight oxidation at the edges of the folio. Small smudges on verso. Full margins [250x330 mm]. Extremely rare: only 2 color proofs and 1 blue proof are known.