This original etching is hand signed in pencil by the artist “Chillida” at the lower right corner.It is also hand numbered in pencil from the edition of 50, at the lower left corner. There were also some proofs aside from the standard edition.It was printed by Arte Adrien Maeght, Paris and published by Maeght Éditeur, Paris in the same year.The paper bears the Chiffon de Mandeure watermark in the lower left corner.