A fake Audemars Piguet perpetual calendar 26574 is a counterfeit copy of AP's 41 mm Royal Oak Perpetual Calendar, the watch whose Calibre 5134 tracks the day, date, month, moon phase, and leap year. Copies are common. Almost none of them run as a true perpetual calendar, and the tells show up in the case, the subdials, and the movement.
What is the Audemars Piguet 26574?
The 26574 is AP's modern Royal Oak Perpetual Calendar. It replaced the earlier 25820 series and comes in steel (26574ST) plus rose gold and yellow gold versions.
- Case: 41 mm across, about 9.5 mm thick, octagonal bezel with eight hexagonal screws.
- Dial: Grande Tapisserie pattern with four subdials at 12, 3, 6, and 9 o'clock.
- Subdials: month with leap-year window at 12, date at 3, moon phase at 6, day at 9.
- Movement: Calibre 5134, an ultra-thin automatic built on the 2120 with a perpetual calendar module.
AP designed the 26574 to sit in the same space as the 1972 Royal Oak. Thin case, integrated bracelet, no compromise on the complication. That mix is what makes it hard to copy.
Why a fake AP 26574 is hard to get right
A perpetual calendar is a mechanical program, not a dial layout. The movement has to know that February has 28 or 29 days and that a leap year arrives every four years.
Most replicas skip that engineering. They use a common automatic movement with a decorative calendar plate, or a module that handles a plain 31-day cycle.
- The leap-year window is printed and static.
- The moon phase runs on a 24-hour wheel, so it shows a new moon twice a month.
- The month indicator needs a manual correction at the end of February.
Some "perpetual" replicas are annual calendars at best. Many are day-date watches behind a busy dial.
How to spot a fake AP 26574
Case thickness and weight
The real 26574 measures about 9.5 mm thick. Replicas land between 11 mm and 13 mm because the base movement plus the calendar module will not fit in a thin case.
Weight is the second cue. Steel fakes feel light for their size, and gold-plated copies show wear on the lugs and clasp where the plating rubs off.
Subdial behavior
Set the watch to February 28 and watch what happens on March 1. A real 26574 rolls to March 1 with no adjustment. A fake with a 31-day cycle jumps to February 29, 30, or 31.
The moon phase is the fastest test. A correct moon phase advances one step per day on a 29.5-day cycle. Most fakes move it on a 24-hour cycle. Watch it for 48 hours and you will know.
Movement finishing
Flip the watch over. The Calibre 5134 shows hand-bevelled bridges, Geneva stripes, and a 22k gold rotor with the AP crest. Fakes show stamped plates with printed stripes and a plated rotor.
Look at the gear teeth under the rotor as well. Real teeth are cut and polished. Fake teeth are pressed and dull.
Dial, hands, and bezel
- Grande Tapisserie squares should sit at a level height with sharp corners.
- Subdial printing is thin and crisp on the real watch. Replica printing is heavy.
- Bezel screws sit flush and level, with no gaps around the head.
- Bracelet links taper and show hand-bevelled edges. Fake bracelets look soft.
What does a real 26574 cost?
AP prices the steel 26574 in the high five figures, and gold versions run higher. Secondary-market prices sit above retail in most periods, and they move with the wider watch market.
That gap is the reason fakes exist. A counterfeit sells for a tiny share of the real price, and the buyer gets a watch that looks close in a photo and fails on a wrist.
Is buying a fake AP perpetual calendar legal in the US?
No. Federal law treats trafficking in counterfeit goods as a crime, and civil trademark law lets AP sue sellers and seize profits.
- U.S. Customs and Border Protection can seize counterfeit watches at the border.
- Importing a counterfeit watch for personal use is still prohibited, even in small numbers.
- Buyers who pay for a fake risk losing both the watch and the money.
The practical side matters too. A counterfeit watch has no warranty, no service path, and no resale value.
How do you authenticate a real 26574?
Start with provenance. A full set means the original box, the AP warranty card, and the purchase record. Ask the seller for the serial number and check it against AP service records.
An AP service center can confirm a watch and service it, and a third-party authenticator can inspect the movement in person. Photos alone cannot settle a perpetual calendar.
For vintage or gray-market pieces, an Extract from the Archives from AP confirms the production details of the reference.
FAQ
Does the fake AP 26574 work as a perpetual calendar?
Most do not. They show day, date, month, and moon phase, but the calendar logic is a 31-day cycle with a fixed leap-year window. That means manual corrections several times a year.
Are high-end "super clone" 26574s available?
Yes, and the good ones copy the case shape, dial texture, and bracelet well. The movement is where they fall apart. No replica maker has produced a working perpetual calendar at scale.
Can a watchmaker service a fake 26574?
Some independent watchmakers will work on them, but parts come from the same factories that built the copy and supply is unreliable. AP service centers will not touch a counterfeit.
Why is the 26574 so expensive to make?
The perpetual calendar module adds hundreds of parts to an already thin movement. Setting up the program wheel, the corrector pushers, and the moon phase gearing takes hours of hand work per watch.