English SirAnthonyVanDyck with a Sunflower, print, Wenceslaus Hollar, after AnthonyvanDyck (MET, 17.50.86) determination method or standard: Metropolitan
English operator: Web Gallery of Art described at URL: https://www.wga.hu/html/d/dyck_van/2portrai/dualport.html determination method or standard: SHA-1