Short answer
The AP 16202 is the Royal Oak "Jumbo" Extra-Thin, a 39 mm stainless steel watch that Audemars Piguet released in 2022 for the model's 50th anniversary. It runs the caliber 7121, an extra-thin automatic movement with roughly 55 hours of power reserve. A fake AP 16202 is a replica built to copy that watch. The better replicas match the case size and the dial pattern, then give themselves away at the movement, the date window, the bracelet taper, and the caseback engraving. Judge one by working from the outside in and comparing each part to reference photos of a genuine 16202ST.
What the genuine 16202 gets right
- Case: 39 mm wide, 8.1 mm thick, steel, with the Jumbo's flat profile.
- Bezel: eight hexagonal screws set at a consistent angle.
- Dial: petite tapisserie grid, applied AP logo at 12, date at 3.
- Movement: caliber 7121, extra-thin automatic, about 55 hours of power reserve.
- Bracelet: integrated, tapering links, hand finished bevels.
Prerequisites
- A 10x loupe.
- Digital calipers that read to 0.01 mm.
- Clear photos of a genuine 16202ST from several angles.
- Bright, angled light so surface reflections are readable.
How to inspect a fake AP 16202
- Measure the case at the bezel and at the lugs. A copy that reads 39.5 mm or 41 mm is wrong. The Jumbo is 39 mm.
- Measure thickness across the caseback. Anything above 9 mm points to a thicker, off the shelf movement inside.
- Check screw alignment. On the genuine watch the slots of the eight bezel screws line up with the case edges.
- Study the screw heads under the loupe. Real ones sit flush with a crisp slot. Copies show a soft dome or a burred slot.
- Read the dial texture. The petite tapisserie is stamped and then finished, so the grid stays even and the facets catch light. Cheap copies print the pattern and it looks flat.
- Inspect the date window. The genuine aperture has sharp corners and sits level with the dial, and the printed numerals are thin and centered.
- Trace the bracelet taper. Links narrow from the case to the clasp in a smooth curve. Copies hold the same width too long, then drop suddenly.
- Run a finger along the bevels. Real bevels are polished to a mirror and the brush lines on the top surfaces run one direction only.
- Turn the watch over. Caseback engraving on the genuine piece is crisp, deep, and centered, and the movement number is engraved.
- Listen to the movement. A thin automatic with a solid rotor runs quiet. A cheap copy ticks or rattles.
Movement, the tell that matters most
The caliber 7121 is where most replicas fail. The genuine movement is a thin automatic with a free sprung balance, hand applied bevels, and Geneva stripes on the bridges. Copies usually carry a mass produced automatic under a decorative rotor plate. That plate hides the works, but it also sits thicker and shifts the caseback proportions. Ask for a photo of the movement with the rotor turned aside. If the seller refuses, treat the watch as a replica and price it that way.
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Dial and hands
Look at the applied AP logo under magnification. The genuine letters have sharp inner corners and a mirror polish on the top face. The hour and minute hands are faceted, polished on the bevels, and brushed on the flat. Replica hands often arrive with a uniform satin finish and rounded tips. The lume plot on the genuine dial sits in a clean recess, while copies show a slight overflow at the edge.
Bracelet and clasp
The integrated bracelet is a separate build from the case. Check the end links for a tight fit with no gap at the lugs. Open the clasp and read the engraving. Genuine stamping is deep and even. Replicas show shallow letters, uneven spacing, or a logo that sits off center. Flex the bracelet and listen for rattle. A genuine Royal Oak bracelet moves with a firm, damped feel.
Price context
Genuine 16202ST examples trade well above retail on the secondary market. A replica sells for a small fraction of that number. If a seller quotes a price close to retail for a "new" watch with no box, no papers, and no service history, that gap is the warning sign. Ask for the reference number, the movement photo, and the caseback photo before any money moves.
Bottom line
Match the measurements first, then the finishing, then the movement. A fake AP 16202 can pass a glance at arm's length. It cannot pass calipers, a loupe, and a look at the movement. Buy on those three checks, not on the story.