Bridget Riley
Untitled (Oval image) (Schubert 3)
Silkscreen, 1964, printed in black, on wove, signed, dated and numbered 9/50 in pencil, printed at Kelpra Studio and donated to the ICA; faint time and mount staining, unexamined out of the frame, 750mm x 340mm (29 1/2in x 13 1/4in)(I)