Collector's Reference
Audemars Piguet Serial Number
Lookup & Guide
Founded in Le Brassus in 1875, Audemars Piguet uses a continuous sequential serial that allows any Royal Oak, Millenary, or Royal Oak Offshore to be precisely dated from production records.
Serial Number Lookup
Enter your Audemars Piguet serial number — found on the caseback or between the lugs at 6 o'clock on vintage and "Jumbo" Royal Oak models.
Results are approximate estimates based on published production records. Audemars Piguet does not publicly release exact serial-to-year data. For authentication, consult a certified watchmaker or contact Watch Affinity directly.
Audemars Piguet Serial Numbers by Year
The table below maps approximate serial number ranges to production years based on historical horological records. AP's serial sequence has been continuous since the manufacture's founding in 1875.
| Year | Serial (approx.) |
|---|---|
| 1875 | 1 |
| 1900 | 5,000 |
| 1910 | 8,000 |
| 1920 | 15,000 |
| 1930 | 22,000 |
| 1940 | 30,000 |
| 1950 | 45,000 |
| 1960 | 60,000 |
| 1965 | 72,000 |
| 1970 | 90,000 |
| 1975 | 120,000 |
| 1980 | 170,000 |
| 1985 | 230,000 |
| 1990 | 300,000 |
| Year | Serial (approx.) |
|---|---|
| 1995 | 450,000 |
| 2000 | 600,000 |
| 2005 | 750,000 |
| 2010 | 1,000,000 |
| 2015 | 1,300,000 |
| 2020 | 1,700,000 |
Where to Find the Serial Number
On most Audemars Piguet watches the serial number is stamped or engraved on the caseback. On the Royal Oak "Jumbo" (ref. 15202), it appears between the lugs at 6 o'clock. Modern pieces also show the reference number on the caseback adjacent to the serial. On models with an exhibition (sapphire) caseback, the movement serial may be visible through the caseback — note that the movement serial can differ slightly from the case serial used for dating purposes.
Key Audemars Piguet References
The reference number identifies the model, case material, dial configuration, and complication. It is found on the caseback of modern AP watches, or between the lugs on vintage references.
| Reference | Model | Era |
|---|---|---|
| 15202 | Royal Oak "Jumbo" Extra-Thin | 1972–present |
| 15400 | Royal Oak Date 41mm | 2012–present |
| 26300 | Royal Oak Offshore Chronograph | 2007–present |
| 26320 | Royal Oak Offshore Diver | 2010–present |
| 15350 | Royal Oak Perpetual Calendar | 2015–present |
| 26240 | Royal Oak Perpetual Calendar (new generation) | 2021–present |
| 25721 | Royal Oak Concept Tourbillon | 2002–present |
| 15450 | Royal Oak Selfwinding 37mm | 2017–present |
| 77350 | Royal Oak Offshore Lady | 2018–present |
AP Serial Number FAQ
Where is the serial number on an Audemars Piguet Royal Oak?
On most Royal Oak models the serial number is engraved on the caseback. On the "Jumbo" 15202 and earlier references it can also be found between the lugs at 6 o'clock. The movement serial may differ slightly and is visible through the exhibition caseback.
What is the most sought-after Audemars Piguet reference?
The Royal Oak ref. 15202 "Jumbo" Extra-Thin in stainless steel is the most coveted, followed by the Royal Oak Perpetual Calendar. Vintage references from the 1970s and 1980s — especially A-series and early B-series serials — command significant premiums.
Serial Number Guides by Brand
Browse our complete library of serial number reference guides for the world's most collectible watch brands.
Sell or Trade Your AP
Get a Fair Offer Today
Royal Oak, Offshore, Millenary — we buy all AP references at true market value. Our specialists provide fast, transparent quotes with same-day payment available. No pressure, no hidden fees.