81. 81AR POL BURY (1922-2005) Set of three etchings on vellum Four circles Etching in colour Signed and numbered 45/50 50.5 x 66 cm Stems and rectangles,1969 Original mobile multiple in colours Signed and justified 'HC Printed in an edition of 20 on chiffon de Mandeure 89.4 x 62.3 cm Cercle au carré éclaté,1972 Etching composed of several copperplates, printed in different shades of yellow Signed and numbered 58/65 121.4 x 80.4 cm Set of three etchings on vellum, two are signed and numbered 45/50 and 58/65, the third is signed and justified 'HC'