The Royal Oak ref. 5402 is a genuine Audemars Piguet reference released in 1972. Replica versions are copies made without a license from Audemars Piguet. They differ from the original in case thickness, movement, dial texture, and hand finishing. Trafficking in them is a federal crime in the United States.
What the ref. 5402 is
Audemars Piguet showed the Royal Oak at Basel in 1972. The first reference was 5402ST. Gérald Genta drew the design. The case is steel, 39 mm across, with an octagonal bezel held by eight hex-slot screws. Most references list thickness at 7.5 mm to 8 mm. The dial carries the Petite Tapisserie grid pattern. Inside sits the calibre 2121, a Jaeger-LeCoultre calibre 920 finished by AP. The launch price was CHF 3,650. Production ran from 1972 into the late 1970s. Collectors call this version the Jumbo. The nickname appeared after smaller Royal Oak sizes arrived.
What a replica 5402 is
A replica is a watch built to look like the 5402 without permission from Audemars Piguet. Sellers label higher-grade copies "super clone." That label has no fixed definition. It tends to mean a cloned movement, a machined case, and a printed tapisserie dial. A genuine 5402 movement shows Geneva stripes, polished bevels, and perlage. Copies match the front of the watch. Most omit the caseback decoration.
Where replicas differ from the original
- Case thickness. Many copies measure 9 mm to 11 mm. The original sits under 8 mm.
- Movement. Clone movements run at 21,600 or 28,800 vph. The original calibre 2121 runs at 19,800 vph.
- Dial. Printed tapisserie lines sit flatter than stamped or milled lines.
- Bezel screws. Copies often use slotted screws with a cut that looks hexagonal.
- Numbers. No archive-matched serial or reference number on the case.
Telling a replica from a genuine 5402
Audemars Piguet issues an Extract from the Archives for a fee. The extract ties a serial number to a reference, a date, and a movement number. A genuine 5402 case carries both numbers, and the two must match. Case thickness is a second check. Copies run thicker than the original. Genuine 5402ST examples have sold at auction above $100,000. Any 5402 offered near $500 is not genuine.
Price and legal status in the US
Replica listings for the 5402 advertise prices from about $150 to $900, based on movement and case finish. Those are unverified listings, not appraisals. Under 18 U.S.C. § 2320, trafficking in counterfeit goods carries up to 10 years in prison for a first offense. The Lanham Act lets a trademark owner sue for damages and profits. U.S. Customs and Border Protection can seize counterfeit watches at the border, including personal shipments. Resale of a counterfeit watch can also bring state fraud charges.