'?Bologna, first half of 15th century (opinion of Dr Otto Pacht)'. Harry and Virginia Walton, of New York: their sale, Blomsbury Auction, New York, 4 April 2009, lot 7; purchased by The British Library. Puzzle initials Master of the Brussels
Ms 978, no. D. 218-1906. See Laurence B. Kanter and others, ~Painting and Illumination in Early Renaissance Florence 1300-1450~ (New York: Metropolitan Museum of Art, 1994), pp. 155-76 [exhibition catalogue] and Gaudenz Freuler, 'Don Silvestro dei Gherarducci', in ~Dizionario Biografico