Untitled (Fragment 1) (Schubert 5a)

Bridget Riley (b. 1931) Untitled (Fragment 1) (Schubert 5a) screenprint in black and white, 1965, on perspex, with the incised signature and date, numbered 28/75 in black ink verso, the full sheet, published by the artist, unobtrusive surface abrasions at the right of the image, retouched in several places verso, framed L., S. 670 x 830 mm.