A signed 1980 tempera on Masonite painting by Marc Chagall soared to $199,700, a 1929 gouache and watercolor on Arches paper signed by Raoul Dufy realized $78,700, and an oil on canvas laid to board signed by Ludwig Bemelmans finished at $57,500 at an auction of the Bridget and Jerome Dobson collection held May 16th by Ahlers & Ogletree, online and live in the Atlanta gallery.