IRVING PENN (1917-2009) Collapse, 1980 platinum-palladium print, flush-mounted on aluminum, printed 1981 signed, titled, dated, numbered '1/23', Penn copyright credit stamp and stamped 'In addition to 23 numbered prints of this image in platinum metals, a number of unsigned silver prints for reproduction in publications may exist' (on the reverse of the flush-mount) image: 12½ x 20¾in. (31.8 x 52.