Auguste HERBIN. Iron. 1945. ACM print, 26 x 39. Sign and title in the plate. Under glass and black frame. Dry stamp ACM (Atelier Claisse Matisse) in the lower left corner. Genevieve Claisse, the artist's great-niece, supervised the creation of the multiples to ensure that the colours and shapes scrupulously respected her uncle's Plastic Alphabet.