GENEVA.- Geneva based auctioneers Hôtel des Ventes sold a highly important and unique collection of extensive correspondence, photographs and drawings exchanged between H.I.H Grand Duke George Alexandrovich, H.I.H Grand Duchess Xenia Alexandrovna, H.I.H Grand Duke Mikhail Alexandrovich and H.I.H Grand Duchess Olga Alexandrovna and their private tutor Mr Ferdinand Thormeyer of Switzerland. The auction room was overcrowded leaving standing room only. The two most prominent buyers were Swiss private collectors. Russian buyers were active both in the room and by telephone as well as a select few American clients. The total sale price reaching 390,000 Swiss francs, the collection fetched almost four times its high estimate. Bernard Piguet, Director and Principal Auctioneers of Hôtel