Quick Answer
A fake Audemars Piguet Royal Oak 16202 copies the shape of the 39mm "Jumbo" Extra-Thin, but it rarely copies the engineering. The genuine 16202ST measures 8.1mm thick and runs the in-house caliber 7121. Most replicas run 9.5mm to 10.5mm thick because they use a rebadged Asian or Swiss automatic movement, and the extra millimeter shows up as a swollen caseback and a mismatched crown height. Three checks expose almost every fake: measure the thickness, look at the dial grid under a loupe, and open the caseback.
What the Real 16202 Is
Audemars Piguet released the Royal Oak Jumbo Extra-Thin 16202 in 2022 for the model line's 50th anniversary. It replaced the 15202. The steel reference 16202ST keeps the 39mm octagonal case, the integrated bracelet, and the two-hand layout with no seconds hand. The date sits at 3 o'clock. The dial is a Petite Tapisserie, a field of small raised pyramids cut on a rose engine. The movement is the caliber 7121, an ultra-thin automatic with a 50th-anniversary rotor. Rose gold and yellow gold versions (16202OR and 16202BA) share the same architecture.
Where Replicas Diverge
Case thickness. This is the first tell. Put calipers on the case at the 12 and 6 positions. A 16202 reads 8.1mm. Replicas read high, and the caseback sits proud of the midcase instead of blending into it.
Dial finish. Genuine tapisserie pyramids have sharp, straight flanks and a mirror-polished top edge. Replica dials use stamped or molded grids with rounded tops and soft corners. The printing on the "Audemars Piguet" signature also runs heavy, and the date wheel font is usually too bold.
Movement. The 7121 is finished with Geneva stripes, beveled bridges, and a gold rotor. Replica movements show milling marks, flat bridges, and a rotor with shallow engraving. A rebadged movement will also sit lower in the case, which changes the crown position against the bezel line.
Bracelet and clasp. Fake links have wider gaps at the joints, and the clasp engraving is stamped rather than laser etched. The AP monogram on the clasp sits off center on most copies.
How to Inspect a 16202 in Person
- Measure the case thickness with calipers at the 12 and 6 positions and compare the reading to 8.1mm.
- Check the crown height against the bezel plane. It should sit almost flush, not recessed or standing proud.
- Examine the tapisserie grid with a 10x loupe and confirm the pyramid flanks are straight and the tops are polished.
- Rotate the watch and watch the bracelet articulation. Genuine links fold with even resistance and no lateral play.
- Open the caseback with a proper tool and look for Geneva stripes, beveled bridge edges, and an engraved rotor.
- Compare the serial and reference engravings on the caseback to the papers, and check the font depth.
- Weigh the watch on a gram scale. Steel 16202 examples land in a narrow band, and a heavy or light reading is a flag.
Replica Price Tiers
Low tier copies sell for under $150 and use quartz or basic automatic movements, mineral glass, and plated cases. Mid tier pieces run $250 to $450 and add sapphire crystal and closer dial printing, but the case is still thick. High tier replicas above $500 get closer on dial texture and bracelet feel, yet the movement remains a clone or a modified third-party caliber, and the caseback thickness gives it away. No replica uses a genuine 7121.
Legal Reality in the US
Importing counterfeit goods into the United States violates federal law, and US Customs and Border Protection seizes counterfeit watches at ports of entry. Selling a replica as a genuine Audemars Piguet is trademark infringement and fraud. Personal possession is a gray area, but resale, repair under a false brand, and service by an authorized watchmaker all carry risk. A replica also holds no service network and no parts supply.
Bottom Line
A fake Royal Oak 16202 can look convincing at arm's length. It will not pass a thickness check, a caseback inspection, or a loupe on the dial grid. Judge any example on those three points before anything else.