Reference
Philippe Dufour Duality
Reference Duality · 18k Rose Gold
Track Philippe Dufour Duality
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About this reference
The Philippe Dufour Duality was produced between 1996 and approximately 1999, with only nine examples originally completed despite an intended run of 25. This reference is valued for its Caliber 8 movement, which features two independent balance wheels linked by a central differential to average out rate errors. The 18k rose gold case measures 34mm in diameter and houses a minimalist silver dial with a sub-seconds register at 8 o’clock. Collectors prioritize the Duality as the first wristwatch to incorporate a dual-regulator system, a complication previously reserved for pocket watches. Due to its extreme scarcity and historical significance, secondary market prices typically fall within the mid-seven-figure range. A notable auction result occurred in 2017 when a rose gold Duality, numbered 00, sold for nearly $1 million, though current valuations have since escalated significantly during private and public sales.
Hammer prices over time
Each dot is a documented public auction sale; click to view the lot. Dashed line marks the current asking median across live listings.
Auction track record
3 documented sales since 2017. Top hammer $3,993,792 at Phillips Geneva in 2021. Median hammer: $2,056,500. Most recent: $2,056,500 in 2024.
Ranks #2 of 11 Philippe Dufour auction lots we track — see all Philippe Dufour records.
Live inventory matching this reference
All documented hammer prices
For this reference (and close variants).
| Lot | Year | Hammer | Venue |
|---|---|---|---|
| Duality · Duality | 2017 | $1,800,000 | Phillips New York |
| Duality · Duality No. 08 | 2021 | $3,993,792 | Phillips Geneva |
| Duality · Duality No. 03 | 2024 | $2,056,500 | Phillips New York |