FRANCO DE' RUSSI Sheet from an antiphony(fol I) with illuminated initial U(nus ex duobus.....1.)... Ferrara, ca. 1455-60 Vellum. 635 x 436 mm. Initial ca.160 x 155 mm. 5 Tetragrams. Gold frame. Provenance: - Robert Lehman collection, New York (since at least 1937) - collection of Jörn Günther, Hamburg (since 2004) - Swiss private collection(since 2005)