Some experts singled out “The Sacrifice of Iphigenia,” a 1671 mythological scene by the Dutch master Jan Steen, as the finest painting in the fair. Dickinson, the London dealer, sold it late Friday afternoon on behalf of descendants of Jacques Goudstikker, a prominent Dutch dealer who fled Amsterdam in 1940, leaving behind works that his

As usual some of the best works were snapped up instantly. By Saturday morning Johnny van Haeften, a London dealer, had sold “An Italianate Landscape With Travelers on a Path” (around 1650), by the Dutch Baroque painter Jan Both, for $5.4 million. The large canvas (about 55 by 65 inches) depicts a rocky landscape bathed