A fake Audemars Piguet Ref 16402 is a replica watch built to imitate the AP model that carries reference number 16402. In practice, judging one comes down to four areas: case and bracelet finishing, dial texture and printing, the movement behind the caseback, and the engravings and paperwork that travel with the watch. Get those four right and you can separate a careful replica from a crude one in a few minutes.

What the reference number tells you

Reference numbers are the fastest way into an AP catalog. Before comparing anything, confirm what 16402 actually denotes: case material and diameter, dial variant, bracelet type, and the movement family in use at that time. The brand's own reference documentation, auction lot notes and archived collector photos are more reliable than a seller's description. If someone offers a Ref 16402 that matches no catalogued combination of case, dial and movement, that mismatch is your first warning.

Case and bracelet finishing

AP cases are known for defined bevels, brushed flat surfaces and polished chamfers that meet at a crisp line. On a fake, the transition between brushed and polished areas often smears, the chamfer loses its edge, and the bracelet links feel loose or sharp at the edges.

  • Bevels: a true chamfer catches light in one continuous line, while replicas show a rounded or wavy edge.
  • Bracelet taper: links should narrow toward the clasp without gaps at the hinges.
  • Caseback: check the number of screws, seat depth and clean threading.
  • Weight and balance: a steel replica can feel close in hand, so judge finishing rather than mass.

Dial and hands

Dial work is where most replicas fall apart under magnification. Tapisserie patterns on AP dials have consistent grid depth and a matte brushed top surface; inexpensive copies print the pattern or cast it with soft corners. Check the date window position, the font of the numerals, and whether the date disc sits flush with the dial. Hands should be evenly polished with clean facets and a centre cap that is perfectly round. When comparing printed text, use reference photography rather than a seller's photo, which is often softened.

Movement

Open the caseback if you can. Genuine AP movements are decorated, with visible perlage, Geneva stripes or a signed rotor, and the finishing continues on parts nobody would see. Replicas of ref 16402 usually sit in one of a few tiers: decorated generic automatics, cloned movements with cosmetic plates, or quartz. Ask for a clear macro photo of the movement, the balance wheel area and the rotor engraving. A seller who cannot supply one is telling you something.

Engravings, paperwork and packaging

Caseback engravings should be laser crisp and correctly spaced, with the reference and serial in the right places for that case shape. Replicas often use a heavier font, uneven depth, or a serial that repeats across several watches. Papers, hang tags and boxes are simple to print, so treat them as supporting evidence only. A box proves nothing on its own.

Quality tiers of Ref 16402 replicas

  • Entry tier: printed dial, stiff bracelet, mineral glass, quartz or a low grade automatic.
  • Mid tier: closer case dimensions, sapphire crystal, decorated automatic, reasonable bracelet feel.
  • High tier: correct case geometry, applied details, cloned movement with cosmetic finishing, matching weight distribution.

The jump between tiers shows up in the details, not in the photographs. Ask for natural light photos and a short video of the watch running before you commit.

Red flags checklist

  • Seller refuses macro photos of the dial, caseback and movement.
  • The reference number does not match the case, dial or movement described.
  • The same serial number appears on more than one watch in the seller's listings.
  • Water resistance claims with no mention of gasket condition or service history.
  • A price far below the market for the genuine reference.

Legal and practical note

Buying or selling counterfeit watches is restricted in many countries, and customs can seize shipments. If your goal is to own the look of AP ref 16402, buy from a seller who describes the watch as a replica openly, states the movement and materials, and offers a return window. That transparency is also the simplest way to judge whether the watch is worth the money.