Anthony van Dyck – Study for an Equestrian Portrait, Possibly that of Albert de Ligne, Count of Arenberg; verso: Various Studies of Statues and Figures, Including the Venus Pudica and Scipio and his Lictor – The Metropolitan Museum of Art https://www.metmuseum.org/art/collection/search/335425
Inscription: At lower left, inscribed „The Count of Arenberg by Vandyke“ pen and brown ink (19th-century handwriting). Verso: at bottom center, inscribed „prins moúris van van Dyk orgenael
New York (American), February 18, 1921, lot 66; Richard Ederheimer (American) Philadelphia