Signed and dated lower right. On the reverse: "27/61" in pencil; declaration of authenticity by Antonella Sanfilippo, on the frame: Artefiera label, Bologna 1992. The work is registered in the Sanfilippo Archive under no. 27/61. Bibliography: 2007, General catalog of paintings from 1942 to 1970, G. Appella, F. D'Amico, Rome, p. 198, no. 399 (with wrong measurements).