Silver Grotto/Yellow Grotto, from Sundry Obras Nuevas

BRUCE NAUMAN (B. 1941) Silver Grotto/Yellow Grotto, from Sundry Obras Nuevas screenprint, on Arches 88 paper, 1975, signed and dated in pencil, numbered 13/20 (there were also eleven artist's proofs), published by Gemini G.E.L., Los Angeles, with their blindstamps and inkstamps on the reverse, the full sheet, time staining, pale areas of moisture staining in places along the lower sheet edge (slightly affecting the signature), framed Sheet: 29 ¾ x 83 ½ in. (756 x 2121 mm.)