License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Stefano della Bella. Plate 15: mid-bust of a young woman in profile wearing a hat topped with feathers, from 'The Book for Learning to Draw' (Livre pour apprendre à dessiner), ca. 1649. The Metropolitan Museum of Art.