On the reverse signed, dated and titled in red brush: PIERO DORAZIO 1996 TOKSUN. On the stretcher with the round artist's stamp in violet and the inscribed work number: STUDIO PIERO DORAZIO 3575. There with the labels of Galerie Valentien, Stuttgart
Piero Dorazio. Gemälde, Aquarelle, Gouachen, Druckgraphik. Stuttgart, Galerie Valentien, 2002, cat. no. 14, ill. p. 20