The reference 16402 does not exist in the Audemars Piguet catalog. No authorized dealer, auction house, or brand archive lists a Royal Oak with that number, so any watch sold under it is either a typo or a counterfeit. The number itself is the first red flag.
Does Audemars Piguet make a Royal Oak 16402?
No. Audemars Piguet has never released a Royal Oak with the reference 16402, and the brand's own collection pages do not show it. The number appears almost entirely in counterfeit listings and marketplace typos.
Buyers who search for 16402 usually mean the Royal Oak Jumbo 16202, the 50th anniversary model introduced in 2022. Earlier versions of the same thin automatic watch carry the reference 15202, while the 41 mm Royal Oak uses 15400 and 15500.
Why do fake listings use the number 16402?
This usually comes from one of two sources. A seller mistypes 16202, or a counterfeit operation invents a reference that sounds rare enough to justify a low price. Genuine reference numbers are documented by the brand and in auction archives, so a number that appears nowhere else is a warning sign.
How do you spot a fake Royal Oak?
Case finishing and bezel screws
Authentic Royal Oaks alternate satin brushing on the case flanks with mirror polishing on the chamfers, and the transition stays razor sharp under a loupe. On fakes the bevels look rounded or over-polished because the finishing is rushed on a bench wheel. The eight hexagonal bezel screws should each sit flush, with the slot of every screw at the same angle.
Tapisserie dial and hands
The Grande Tapisserie dial is stamped with a grid of raised pyramids, and every square should show crisp, even relief with a matte top face. Counterfeit dials are cast or printed, so the pattern looks shallow and the squares vary in depth. Check the applied logo too, because genuine metal logos sit level while fake ones are often glued crooked.
Thickness, movement, and date
The Jumbo measures roughly 8.1 mm thick, and that slimness is difficult for counterfeiters to match because their donor movements are thicker. If the watch sits tall on the wrist or the caseback bulges, treat it as suspect. On open casebacks, look for the correct calibre number, a free-sprung balance, and a date font that matches original photography.
Bracelet, clasp, and caseback
The Royal Oak bracelet tapers gradually, and the end links should meet the case with no visible gap. Genuine clasps show deep, crisp engraving and a firm double-fold action, while fake clasps feel light and carry shallow stamping. Caseback engravings, including the reference and serial number, should be sharp and consistent with the paperwork supplied by the seller.
What should you check before buying a Royal Oak?
- Confirm that the reference number on the caseback matches the papers and the listing.
- Request high-resolution photos of the movement, caseback, and clasp before paying.
- Compare the asking price to current market data, since a Jumbo priced far below market is not a bargain.
- Pay for independent authentication by a watchmaker who services Audemars Piguet, and use escrow or a credit card.
FAQ
Are all Royal Oak listings marked 16402 fake?
Nearly all of them are. A legitimate seller occasionally mistypes 16202, but the watch itself still shows the correct reference on the caseback.
How much does a Royal Oak authentication cost?
Independent authentication typically runs from about 150 to 400 US dollars, depending on whether the watch is opened and the movement inspected. That fee is small compared with the loss on a counterfeit.
Can a fake Royal Oak pass a visual check?
High-end replicas can survive a casual glance, but they fail on case thickness, dial relief, and movement construction. A watchmaker with the caseback open will identify them within minutes.