the portfolio, 1968, comprising eight screenprints in colours, each signed, dated and numbered 34/75 in pencil, printed at Kelpra Studio London, published Edition Bruno Bischofberger, Zurich, on shaped cardboard, the sheets loose in the orginal vinyl covered portfolio box with titile printed on the uppers, each 615 x 960 mm (24 1/4 x 37 7/8 in) IMPORTANT: This lot is sold subject to Artists Resale Rights, details of which can be found in our Terms and Conditions.