Silver Grotto/Yellow Grotto, from Sundry Obras Nuevas (C. 36; G. 610)

BRUCE NAUMAN Silver Grotto/Yellow Grotto, from Sundry Obras Nuevas (C. 36; G. 610) screenprint, 1975, on Arches 88, signed and dated in pencil, numbered 2/20 (there were also 11 artist's proofs), published by Gemini, G.E.L, Los Angeles, with their blindstamp and inkstamp on the reverse, with full margins, pale light-staining (affecting the subject) L. 19¾ x 74½ in. (502 x 1892 mm.) S. 29 7/8 x 83¼ in. (759 x 2115 mm.)