Inscribed on verso, below center, in pen and brown ink, "Primaticcio"; at center, in graphite, encircled, "3.818'; at lower left, in graphite, "Guido Reni".
Ryskamp, Charles, ed. Sixteenth Report to the Fellows of the Pierpont Morgan Library, 1969-1971. New York : Pierpont Morgan Library, 1973, pp. 113-114, 119.