Etching. P.A., artist's proof outside the edition of 50. Signed lower right in pencil and with the artist's sign: CHILLIDA, also with the dedication: POUR ALFRED HENTZEN CORDIALEMENT. Image 10.6 × 17.8 cm on Auvergne wove paper (with the watermark) 37 × 48 cm. Published by Maeght Éditeur, Paris. Printed by Imprimerie Arte Adrian Maeght, Paris.