A fake Audemars Piguet Royal Oak Perpetual Calendar 26574 is easiest to catch with three checks: case thickness (the genuine watch is about 9.5 mm), movement beat rate (caliber 5134 runs at 19,800 vibrations per hour, or 2.75 Hz) and the four calendar correctors recessed into the caseback. Most replicas measure 1.5 to 3 mm thicker because they stack a calendar module on a common base movement. Dial printing and hand finishing separate a careful copy from an obvious one.
What is the Audemars Piguet 26574?
The 26574 is the 41 mm Royal Oak Perpetual Calendar sold in stainless steel and in gold, introduced in the mid-2010s. It shows month and leap year at 12 o'clock, the date at 3, a moon phase at 6 and the day at 9, with the week of the year read from a ring around the dial edge. Inside sits the extra-thin caliber 5134, a descendant of the 2120 base, with roughly 40 hours of power reserve.
How do you tell a fake 26574 from a real one?
Measure, then look. These are the details that resolve most questions.
- Case thickness: genuine is about 9.5 mm. A 11 mm or thicker case on a 41 mm Royal Oak is a strong sign of a replica.
- Beat rate: a timing machine should show 19,800 vph. Replicas built on 28,800 vph movements sweep differently and read 4 Hz.
- Caseback correctors: four small recessed correctors sit flush in the caseback for setting day, date, month and moon. Copies often use protruding pushers or expect you to set everything from the crown.
- Dial: the Grande Tapisserie grid, the applied AP logo and the printed week ring should line up with sharp edges and no fuzzy ink.
- Subdial hands: they are very thin and correctly sized. Blunt, oversized or burred hands point to aftermarket assembly.
- Finishing: the rotor engraving, bevels and perlage under a sapphire back should be clean and consistent, not stamped looking.
Why is the 26574 copied so often?
It is a high-value steel watch with a simple visual silhouette, so it carries strong resale appeal and draws copyists. The perpetual calendar module is the hard part, and that is exactly where replicas struggle. A workable calendar mechanism plus a thin case is expensive to produce, so most copies compromise on height first.
Is buying or selling a fake 26574 legal?
In the United States, trafficking in counterfeit goods is a federal offense under 18 U.S.C. 2320, and U.S. Customs and Border Protection seizes counterfeit watch shipments. Buying a replica for personal wear is a different question from selling one as authentic. Resale with a false claim of authenticity exposes the seller to civil and criminal liability, and a buyer who pays genuine prices for a counterfeit has limited recourse.
How should you verify a 26574 before buying?
Ask for macro photos of the caseback, the crown side and the movement, plus a timing machine printout showing the beat rate and amplitude. Confirm the case thickness with calipers rather than trusting a listing. For any four-figure or higher purchase, have the watch checked by a watchmaker or an authorized service center, and treat "super clone" or "1:1" marketing as a description of intent, not of accuracy.