Sancy Astor family possessed it for 72 years until the 4th Viscount Astor sold it to the Louvre for $1 million in 1978. The Sancy now rests in the Apollo Gallery, sharing attention with the likes of the Regent and the Hortensia. Sancy The Sancy, a pale yellow diamond of , was once reputed to have belonged to the Mughals of antiquity, but is more likely of Indian origin owing to its cut, which is unusual by Western standards. The shield-shaped stone comprises two back-to-back crowns (the typical upper half of a stone) but lacks any semblance to a pavilion (the
Multiunit auction provides an incentive for bidders to bid insincerely unless each bidder has demand for only a single unit. For multiple-unit demand, bidders have an incentive to shade their bids for units other than their first because those bids may influence the price the bidder pays. This demand reduction results in an inefficient equilibrium. A variation that preserves the incentive to bid truthfully is the Vickrey-Clark-Groves auction. In a pay-as-bid auction (or discriminatory price auction), multiple homogeneous items are sold at different prices. An example is the auction system at the Dutch Flower Auctions, where a lot is allocated to (potentially)