Count Wilhelm Pourtalès (1815–1889), Berlin and Venice, as of 1883, by inheritance to; Count Friedrich (Fritz) Pourtalès (1853–1928), Berlin, and later (as Prussian ambassador to Russia, 1907–14), Saint Petersburg. Botkin (probably Mikhail Botkine) collection, Saint Petersburg. Koenigsberg or Konningsberg, 6 Sept. 1924, to; [Wildenstein & Co., Inc., Paris, sold 2005 to]; LACMA.