Watch of the Day · 2026-10-17 · from the archive
Audemars Piguet Royal Oak Perpetual Calendar Openworked
Ref. 25829TP · Tantalum and Platinum — one documented result from the 1,177-lot MostExpensiveWatches auction record, featured today.
A rare combination of tantalum and platinum in an openworked perpetual calendar, part of a limited series of only 16 pieces.
Achieving $779,259 at Phillips Geneva in 2022, this Audemars Piguet Royal Oak Perpetual Calendar Openworked ref. 25829TP stands out for its limited production of only 16 pieces featuring a rare combination of tantalum and platinum. Within the corpus of 65 documented Audemars Piguet results—anchored by the brand record of $7,736,000 for the Grosse Pièce in 2025—this result establishes a documented pricing benchmark for an openworked perpetual calendar produced in exceptionally low numbers.
Full lot record & sources All Audemars Piguet results The Grail Index
Previous watches of the day
| Date | Watch | Result |
|---|---|---|
| 2026-10-22 | Omega Speedmaster "Broad Arrow" | $408,500 · Phillips Geneva · 2018 |
| 2026-10-21 | F.P. Journe Chronomètre à Résonance “Souscription No. 007” | $13,922,000 · Phillips New York · 2026 |
| 2026-10-20 | Philippe Dufour Duality No. 03 | $2,056,500 · Phillips New York · 2024 |
| 2026-10-19 | Sylvain Berneron Mirage 34 "Chrysoprase" | $498,500 · Phillips Geneva · 2026 |
| 2026-10-18 | Patek Philippe Single-Button Chronograph | $4,987,000 · Phillips Geneva · 2015 |
| 2026-10-16 | MB&F Horological Machine N°4 Thunderbolt | $285,000 · Phillips New York · 2024 |
| 2026-10-15 | Omega Speedmaster "Broad Arrow" | $137,000 · Christie's New York · 2015 |
| 2026-10-14 | Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin | $153,000 · Sotheby's Hong Kong · 2022 |
| 2026-10-13 | Patek Philippe Perpetual Calendar Chronograph | $17,631,075 · Phillips Geneva · 2025 |
| 2026-10-12 | Breguet Minute Repeating Perpetual Calendar | $183,185 · Phillips Geneva · 2025 |
| 2026-10-11 | A. Lange & Söhne Lange 1 | $154,000 · Christie's Geneva · 2013 |
| 2026-10-10 | Rexhep Rexhepi Chronomètre Contemporain I | $920,000 · Phillips Geneva · 2023 |
| 2026-10-09 | Voutilainen Vingt-8 Hisui Unique Piece | $561,834 · Phillips Hong Kong · 2022 |
| 2026-10-08 | Rolex Cosmograph Daytona "Paul Newman" | $447,392 · Antiquorum Monaco · 2026 |
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: 2026-10-17T00:15:29.504919+00:00