After Edgar Degas Les Jockeys - Premier Version Lithograph, C.1888-89, by George William Thornley, printed in sanguine, on cream chine appliqué mounted on a greenish blue backing sheet, from the edition of 100 (plus 25 proofs), with Thornley&#39;s lithographed signature, printed by Atelier Becquet, Paris, published by Boussod-Valadon, Paris, 210 x 245mm (8 1/4 x 9 2/3in)(I)