VAT rate of 5% is payable on hammer price and at 15% on the buyer's premium
Christie's Geneva, Art Nouveau & Art Deco; Collection of a Gentleman, 11th May 1981, lot 306.
Nöel Daum, Daum Maitres Verriers, Paris, p. 97
Ray and Lee Griver, European Art Glass, p. 106, pl. 153
Georges de Bartha, L'Art 1900, Lausanne, 1993, p. 28