AUDEMARS PIGUET PERPETUAL CALENDAR
Audemars Piguet perpetual calendars automatically track differing month lengths and leap years when kept running. This curated page spans Royal Oak and Code 11.59 executions, including classic ultra-thin calibres and the newer all-in-one-crown setting architecture.
No Audemars Piguet Perpetual Calendar watches are available right now. Contact our specialists below to source a specific reference.
Model History & Buyer Guide
Audemars Piguet Perpetual Calendars Across Royal Oak and Code 11.59
A Complication, Not One Case Family
This page groups AP perpetual calendars across collections. Royal Oak references are the best known, but Code 11.59 also houses the complication. Products can therefore belong to both their design collection and this focused calendar category.
Classic calibre 2120/2802 and later calibre 5134 watches use case correctors. Newer calibres 7138 and openworked 7139 introduced all-in-one-crown setting, changing the ownership routine substantially.
Calendar Safety and Completeness
A perpetual calendar tracks day, date, month, leap year, and often moon phase. If it stops, every indication must be advanced safely and synchronized; correctors should not be pressed during calendar engagement.
A setting stylus, instructions, service documents, and a complete bracelet are not minor accessories. Confirm leap-year indication and coordinated midnight change before valuation.
Audemars Piguet Perpetual Calendar Price Guide
Indicative secondary-market ranges in US dollars, researched from current market estimates and live dealer listings and updated August 2026. These are not fixed valuations: condition, originality, production year, service history, and completeness can move an individual watch outside the range.
| Reference | Configuration | Typical Pre-Owned Price | Market Note |
|---|---|---|---|
| 26574ST | Royal Oak Perpetual Calendar steel | $85,000 — $115,000 | Dial and condition matter substantially |
| 26579CE | Royal Oak Perpetual Calendar ceramic | $150,000 — $220,000 | Ceramic color and case condition drive scarcity |
| 26674ST / 26674OR | New crown-set Royal Oak generation | $110,000 — $180,000 | Early secondary supply remains limited |
| 26394OR | Code 11.59 Perpetual Calendar | $70,000 — $105,000 | Dial and service status influence price |
Understanding Perpetual Calendar
Setting architecture—case correctors or the newer crown system—is one of the most consequential differences between generations.
| Feature | Function | Why It Matters |
|---|---|---|
| Leap-year display | Positions the watch within a four-year cycle | Must agree with month and date for correct operation |
| Moon phase | Tracks the lunar cycle | Fine adjustment is part of a complete setup |
| Crown setting | New calibres set calendar indications through the crown | Reduces dependence on separate case correctors |
Reference-Level Buying Checklist
Use the exact reference—not the family name alone—to verify the following points before purchase.
| Check | What to Verify | Why It Matters |
|---|---|---|
| Calendar synchronization | Day, date, month, leap year, moon, and midnight change | One misaligned indication can signal adjustment or service needs |
| Setting tools | Correct stylus/manual or crown procedure for the calibre | Improper setting risks movement damage |
| Service timing | Last AP service and water-resistance test | A complex watch left stopped for years may need more than regulation |
Frequently Asked Questions
About Perpetual Calendar
Are all AP Perpetual Calendars Royal Oaks?
No. The complication also appears in Code 11.59 and historical round watches. This page intentionally crosses case collections.
What happens in the year 2100?
The Gregorian calendar omits the leap day in 2100, so conventional mechanical perpetual calendars will require correction then.
Can I use the correctors whenever the watch stops?
No. Follow the exact calibre instructions and avoid the calendar-change danger period. When uncertain, have a specialist set it.
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Looking for a Specific Perpetual Calendar Reference?
Our specialists can compare references, movements, condition, service history, and set completeness. Contact Atlas Luxury for current Perpetual Calendar availability or help sourcing a particular configuration.