A comparable ewer with double spout is illustrated in O. ter Kuile Koper & Brons, Amsterdam, 1986, p. 183, cat. no. 254. The catalogue entry also refers to a similar ewer from the Figdor collection. The Figdor ewer is even closer to the present ewer than the Rijksmuseum example. Cf. Sammlung Dr. Albert Figdor, Wien sold through Paul Cassirer, Berlin, 29-30 September 1930, volume V, lot 492, illustrated plate CLXXIX.