 Complete the following phrase:  In a Sothebys auction in Geneva, in April 1987, the Duchesss remarkable jewellery collection raised 45 million for the institute, approximately seven times its pre-sale estimate. Blum later claimed that Egyptian entrepreneur Mohamed Al-Fayed tried to purchase the jewels for a rock bottom price. Al-Fayed bought much of the non-ficial estate, including the lease of the Paris mansion. An auction of his collection was announced in July 1997 for later that year in New York. Delayed by his sons death in 