Answer first
3399 is a price, not a model number. In listings for counterfeit Audemars Piguet watches, 3399 means $3,399. Audemars Piguet uses reference numbers such as 26574ST.OO.1220ST.01 for the Royal Oak Perpetual Calendar. No AP reference takes the form 3399.
The watch the listing copies
The Royal Oak Perpetual Calendar 26574 runs Calibre 5134, a self-winding movement built on the 2120 base. The case measures 41 mm across and 9.5 mm thick. The dial shows day, date, month, moon phase, and leap year. Retail for the steel version sat near $100,000 in 2024. Secondary market listings ask $150,000 and higher.
What $3,399 buys in the replica market
That price sits above the common $400 to $800 tier, and sellers use it to suggest a 1:1 clone. A perpetual calendar needs a program wheel, a February lever, a four-year cam, and a moon phase disc with 59 teeth. Chinese workshops build decorative calendar plates that sit on top of a Miyota 9015 or a similar automatic movement. The second layer adds about 2 mm to 3 mm. A replica case measures 11 mm to 13 mm thick against the 9.5 mm of the genuine watch.
Tells on the dial and caseback
- Thickness: a caliper reading above 10 mm on a 41 mm perpetual calendar points to a module movement.
- Leap year and week displays: these functions stay frozen on many replicas.
- Moon phase: printed discs on cheap builds turn once per day instead of once per 29.5 days.
- Caseback: Calibre 5134 carries a gold rotor with Geneva stripes and specific bevels. Replicas show plated brass and mismatched screw heads.
- February test: set the date past Feb 28 in a non-leap year. A true perpetual calendar jumps to Mar 1. A module build stalls or needs the pusher.
Price math
A genuine 26574 trades for $150,000 and up. Service on a perpetual calendar at an authorized center runs into four figures. A $3,399 replica holds no resale value, and resale of counterfeit goods invites claims under 15 U.S.C. 1114.
Legal status in the US
Importing counterfeit watches violates 19 U.S.C. 1526(e). U.S. Customs and Border Protection seizes shipments and destroys the goods. Trafficking in counterfeit goods carries a maximum of 10 years in prison for a first offense under 18 U.S.C. 2320. Federal charges target sellers and importers. A buyer can still lose the watch to seizure.
Questions to ask before paying $3,399
- Which Audemars Piguet reference number does the watch copy? Check that number on the brand's own site.
- Which movement sits inside, and does the calendar module come from a named maker?
- What is the measured case thickness with calipers?
- Does the seller accept a return after a watchmaker opens the caseback?
What is not known
Factory names change and sellers rename batches. No public data confirms which workshop built any single $3,399 listing. Treat factory claims as unverified.