Inscription: Signed and dated in pencil on mount, recto BR; inscribed in pencil on mount, recto BL: "Portrait d'Ubu" [underlined]; paper label with red border affixed to BR corner mount recto with inscription in red pencil: "71"; inscribed in pencil on paper label affixed to mount, verso TR: "45" and stamped "210"; circular stamp on mount, verso TC: "Duanes Exposition - Paris" [upside-down]; stamped below label on mount, verso: "GALERIE ROBERT // keizersgracht 5 & 7 // AMSTERDAM - C"