Joe Tilson Demetrius' Ladder 1978-81 one etching and aquatint with screenprint in colours I. various, largest 66 x 99.2 cm (25 7/8 x 39 in.) S. various, largest 80.3 x 121 cm (31 5/8 x 47 5/8 in.) signed, dated and numbered 13/71 respectively in pencil (there were also 14 artist's proofs for Demetrius' Ladder)