At the back title, signature and Guastala Study, Milan label. Emilio Tadini Archive's authenticity certificate on photo with artist's signature. Provenance: Il Pastello di Marcello Persica, Rome; Private collection, Rome.
Signature and year lower left. Artist's authenticity certificate on photo. Provenance: Costantino - Marino Collection. Publication: Mostra a domicilio - 64 opere da collezione, Angiolino Calestani, Milan, 1 October -6 November 1991.