Watch of the Day · 2026-08-11 · from the archive
Cartier Tank Louis Cartier
Ref. Tank · 18k Yellow Gold — one documented result from the 1,183-lot MostExpensiveWatches auction record, featured today.
Formerly the property of Jacqueline Kennedy Onassis, this historic watch was a gift from her brother-in-law Prince Stanislaw Radziwill and is engraved with the dates of their famous 50-mile hike.
This 18k yellow gold Cartier Tank Louis Cartier ref. Tank sold for $379,500 at Christie’s New York in 2017. Its value is driven by its provenance as the former property of Jacqueline Kennedy Onassis. Gifted by Prince Stanislaw Radziwill, it features engravings of their 50-mile hike. Within the 65 documented Cartier results, this sale highlights the market for historical pieces, while the brand record stands at $2,028,800 for a Crash (2026).
Full lot record & sources All Cartier results The Grail Index
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| Date | Watch | Result |
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| 2026-10-09 | Voutilainen Vingt-8 Hisui Unique Piece | $561,834 · Phillips Hong Kong · 2022 |
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| 2026-10-04 | Patek Philippe Perpetual Calendar Automatic (with Leap Year) | $322,000 · Phillips Geneva · 2022 |
| 2026-10-03 | Vacheron Constantin King Fouad I Pocket Watch | $2,755,000 · Antiquorum Geneva · 2005 |
| 2026-10-02 | Voutilainen Vingt-8 | $138,176 · Sotheby's Hong Kong · 2024 |
| 2026-10-01 | A. Lange & Söhne Tourbillon 'Pour le Mérite' (1994) | $285,000 · Phillips Geneva · 2023 |
| 2026-09-30 | Voutilainen Reference 217QRS Retrograde Date | $146,050 · Sotheby's New York · 2023 |
| 2026-09-29 | Audemars Piguet Royal Oak Perpetual Calendar Openworked | $695,000 · Phillips Geneva · 2022 |
| 2026-09-28 | Panerai Radiomir Guido Panerai & Figlio | $391,000 · Phillips Geneva · 2023 |
| 2026-09-27 | Bovet Miss Audrey Sweet Fairy Only Watch | $247,000 · Christie's Geneva · 2021 |
About this series
Every day MostExpensiveWatches features one documented auction result from its comp corpus — hammer prices with primary sources, the record layer behind the Grail Index and the daily Price Index. Machine-readable: /data/watch-of-the-day.json. Cite as “MostExpensiveWatches Watch of the Day”.
Compiled: 2026-08-11T00:15:28.572561+00:00