Robert Mangold (born 1937) Two Columns C , 2004 Etching with relief in colors on Mulberry paper mounted onto Arches Cover, signed in pencil, lettered 'C' and numbered 20/30 (there were also artist's proofs), publisher/printer Pace Editions, New York, with full margins, framed. 39 1/2 x 29in (100.3 x 73.6cm) sheet 43 x 31 5/8in (109.2 x 80.3cm)