How does this artwork elucidate its Abraham Served by the Angels?
Because of its poor condition, for a long time this work was considered a part of a larger Nativity. The identification of theme was possible after the finding of a small panel by a 15th-century French master (now at Denver) in which the scene is reproduced in its entirety, and which was surely known by the Italian master: the part missing in Antonello's work would show Sarah spying Abraham from the hut's door.
Denver