Olivier Debré (1920-1999) Small sign-character. 1972. Aquatint and embossing (carborundum). 137x85. Pernoud not described. Fine proof printed in turquoise blue on the upper cover of a filled greeting-card folio, signed with the initials and dated "72" in pencil, with a long letter from the artist in brown felt-tip inside, dated 1972.