Etching, graphite and India ink on wove paper, 38 x 28.5 cm (sheet). 1960. State proof with numerous revisions and annotations on the further processing of the plate together with the planned execution of the printing by André Masson. Monogrammed "A. M" in pencil, inscribed "Essai" and titled "L'Enigme". Only impression of the 1st state (of 4). Provenance: Ex collection Roger Passeron
