Short answer

A fake Audemars Piguet ref 15202 is a counterfeit of the Royal Oak Jumbo Extra-Thin. The genuine watch measures 39 mm across and 8.1 mm thick. Most fakes measure 9 mm to 11 mm. The genuine caseback is solid steel, so the movement is not visible from outside. Counterfeits fail on case thickness, dial detail, caseback engraving, and beat rate.

What the ref 15202 is

Audemars Piguet released the 15202 in 2012 for the 40th anniversary of the Royal Oak. It followed the 5402. Production ended in 2022, and the 16202 with calibre 7121 replaced it.

  • Case: 39 mm diameter, 8.1 mm thickness, steel on 15202ST.
  • Movement: calibre 2121, automatic, 3.05 mm thick, 19,800 vibrations per hour, about 40 hours of power reserve. The 2121 descends from the Jaeger-LeCoultre 920.
  • Caseback: solid, held by eight screws.
  • Dial: Petite Tapisserie grid, applied AP monogram at 12 o'clock, date at 3 o'clock.
  • Bracelet: integrated, tapering, AP logo on the clasp.

Steel references include 15202ST.OO.1240ST.01 with a blue dial. Gold and platinum versions carry OR, BA, BC, and PT suffixes.

Measure thickness

Calipers answer the question in under a minute. A genuine 15202 case is 8.1 mm thick. A case that reads 9.5 mm or more is not a 15202 case, no matter what the dial says. Crooked or oversized lugs raise the number further. Thin fakes exist, but they trade case thickness for a movement that sits low and a dial that sits close to the crystal.

Check the caseback

The 15202 has a solid caseback. A sapphire display back on a watch sold as a 15202 points to a counterfeit, because the sapphire back arrived with the 16202.

Genuine engraving is cut into the metal with sharp edges and even depth. Reference number and case number sit on the back. Counterfeit engraving shows rounded edges, shallow cuts, and wrong spacing between characters. The eight screws sit flush with the surface. Proud screws and stripped slots point to a fake.

Read the dial

  • Tapisserie squares are raised, with sharp edges and even height across the dial. Stamped squares with soft edges and uneven height point to a fake.
  • On blue dials the date wheel has a blue background. A white date wheel is a common fake tell.
  • The AP monogram at 12 o'clock is applied metal. A printed monogram or a thick block shape points to a fake.
  • Hands are slim with polished bevels. Thick hands and painted edges point to a fake.
  • "SWISS MADE" sits at 6 o'clock below the minute track.

Test the movement

The 2121 runs at 19,800 vibrations per hour, or 2.75 Hz. Many fakes use a Miyota 9015 or a Seagull movement at 28,800 vibrations per hour, or 4 Hz. A timegrapher reading of 28,800 rules out the 2121. A true volume clone of the 2121 does not appear in the counterfeit market. The movement is 3.05 mm thick, and the cost of copying it is high.

Inspect the bracelet and clasp

End links meet the case with narrow gaps on a genuine bracelet. Wide gaps, side play, and loose screws point to a fake. Link screws carry a clean slot. The clasp shows the AP logo with sharp edges and even polish. Blurred logos and shallow stamping point to a fake.

Papers, price, and law

Counterfeit sales in the United States violate 18 U.S.C. 2320. US Customs and Border Protection seizes counterfeit shipments at ports of entry. Genuine 15202 examples trade on the secondary market above the last retail price. Counterfeits sell for tens of dollars to a few hundred dollars. A 15202 dial at that price is a counterfeit.

Audemars Piguet can verify a watch and service it. An Extract from the Archives confirms case and movement numbers for a specific reference. Service records and a matching case number carry more weight than any box or card.