Noboru Tsurutani (Japanese/American, 1940-2007), "Work No. 42", Serigraph in Colors, numbered edition "49/50" lower left, signed in pencil lower right, giltwood frame. Image: 24" H x 20.5" W; frame: 30.5" H x 27" W. Provenance: From a New York City Collection. Keywords: Prints, Multiples, Op Art, Optical Art, Geometric, Rainbow, Contemporary Art