Bridget Riley (British, born 1931) Start (Schubert 41; Tommasini & Gubay 41) Screenprint in colours, 2000, on wove paper, signed, titled, dated and numbered 98/200 (there were also 20 artist's proofs), printed by Sally Gimson at Artizan Editions, Hove, published by the artist, with full margins, framed Image 348 x 380mm (13 3/4 x 15in) Sheet 475 x 494mm (18 3/4 x 19 1/2in)