Lot Essay
cf. F. Deboni, Murano 900, Milano, 1996, p. 230 for an image of another `Valva siderale';
M. Heiremans, 20th Century Murano Glass, Stuttgart, 1999, p. 103.
M. Heiremans, 20th Century Murano Glass, Stuttgart, 1999, p. 103.