Jan Dibbets, set of 2 famous artists’ postcards

Published by Seth Siegelaub, New York, 1969, ed. of ca. 1000. Double sided, 10.1 x 15.1 cm, printed as an announcement for a performance by Dibbets in Amsterdam. Features two b/w photographs, one of the artist winking and making a thumbs-up gesture, the other shows a building with a black cross marked over a window.

Message on verso reads: 'On May 9 (friday), May 12 (monday) and May 30 (friday) 1969 at 3.00 Greenwich Mean Time (9.00 EST) Jan Dibbets will make the gesture indicated on the overside at the placed 'X' in Amsterdam, Holland’. Dibbets mailed the postcard to art collectors, curators and friends around the world. This lot includes 2 copies, one copy is mailed to Dibbets himself (the address is handwritten by the artist). The second card is an unmailed copy. Both cards are mint. (total 2)