Signé du monogramme au crayon en bas à droite "Bs.". Signé du monogramme en bas à droite "Bs.". Signé du monogramme au crayon en bas à gauche "Bs.". Commentaire : Set of seven works on squared paper; pencil and blue ink, on the reverse, pencil and blue ink; pencil, on the reverse, pencil and ink, signed with the monogram lower right; pencil and blue ink, on the reverse, pencil and blue ink; blue ink, signed with the monogram lower right, on the reverse, pencil; blue ink, on the reverse, pencil and blue ink; blue ink, signed with the
