Etching and aquatinta. 133/150. Signed in pencil lower right: Chillida, as well as with the artist's signet. Image 29.3 × 33 cm on wove paper by BFK Rives (with the watermark) 75.2 × 52.7 cm. Published by the Association pour la Prévention de la Torture (APT), Geneva. Printed by Taller Hatz, San Sebastián.
