Le Coq et l'Arlequin. - Notes autour de la musique Avec un Portrait de l'Auteur et Deux Monogrammes par P. Picasso

first edition, one of the author's copies marked with the initials JC,
First issue of the Collection of Tracts.
This work is decorated with a portrait and two monograms by Pablo Picasso, one representing a cock and the other a harlequin.
Precious autograph signed by Jean Cocteau to François Le Grix, dated March 1919, framing the portrait of the author by Pablo Picasso.
Beautiful full copy of the butterfly "the French language is a piano without pedals".