Alternative Asset Data

for Luxury Collectibles

ALT/FNDATA is the market data platform for passion investments: realized auction prices, valuations and tax tools across watches, art, cars, jewelry and wine.

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All featured collections
Duchess of Windsor

Duchess of Windsor

Jewelry

Her Cartier and Van Cleef & Arpels jewels, many gifts from the Duke, sold at Sotheby's across two landmark sales (Geneva 1987, London 2010).

Realized at sale$7M
Estimated today modeled~$6.1M
−13%
Modeled value over timemodeled

Realized price carried forward by ALT/FNDATA’s trophy-tier price trend for each lot’s category.

A modeled market-level estimate, not an appraisal. Individual pieces vary.

Documented sales

Cartier onyx-and-diamond “Panther” bracelet (1952)
Cartier onyx-and-diamond “Panther” bracelet (1952) Confirmed
Sotheby's·The Jewels of the Duchess of Windsor, London · Nov 30, 2010
Top lot of the 2010 sale; a then-record for a Cartier piece and for any bracelet at auction.
The Jewellery Editor Image: Sotheby's
Realized£4,521,250 (~$7m)

“Estimated today” is a modeled figure, not an appraisal: each realized price is adjusted by the change in ALT/FNDATA’s trophy-tier price level for its category (the median of comparable high-value lots, from the sale year to the present). It is a market-level estimate; individual pieces vary, and categories without enough comparable high-value data are shown as insufficient to estimate.

Notable historical collection. The realized figures are public auction results, from the dates shown. “Estimated today” and the value chart are modeled market estimates, not a live valuation or appraisal, and not a current holding.
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