Mixed technique on canvas (gouache on embossed collage on canvas) signed in black bottom right. Dated 1969 on the back part of the canvas frame and titled "La bouteille" on the back of the canvas with reference number "81". This work created in 1969 was exhibited in 1972 at the German Art Gallery Dreiseitl. Authenticity confirmed by the Archives Antoni Clavé of Nathalie Clavé.

For comparable See 

La bouteille bleue (1967) Huile/toile 101x81cm Ansorena Madrid 26/2/2015