License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Totoya Hokkei. Seal-stone and Seal-ink with Peacock Feathers, from Spring Rain Surimono Album (Harusame surimono-jō), vol. 1, probably 1817. The Metropolitan Museum of Art.