Quick answer

The Rolex Cellini Dual Time is a 39 mm dress watch in 18 ct gold. Center hands show local time. A subdial at 6 o'clock shows a second time zone with a day and night disc. Replica versions copy the dial layout and the case shape. They run third-party automatic movements, not the Rolex calibre 3180, and use plated steel, not solid gold. Copies sell for about USD 100 to 450. The genuine watch retailed near USD 20,000 at launch.

Genuine reference facts

  • References: 50529 in 18 ct white gold, 50525 in 18 ct Everose gold. Introduced in 2014.
  • Case: 39 mm. Double bezel, fluted and domed. Sapphire crystal. Water resistance 50 m.
  • Movement: calibre 3180, self-winding, COSC certified. 31 jewels. 28,800 vph. 48-hour power reserve.
  • Display: hours, minutes, center seconds, date at 3 o'clock, second time zone at 6 o'clock, day and night aperture.
  • Strap: alligator leather with an 18 ct gold pin buckle.
  • Rolex has discontinued the Dual Time reference. It does not appear in the current Cellini lineup.

How the dual time display works

The crown sets local time and the date. The wearer sets the second zone from the crown in a separate position. The subdial at 6 o'clock runs a 12-hour scale. An aperture in that subdial shows a sun or a moon for day and night at the remote zone. This is a 12-hour second zone. It is not a 24-hour hand against a bezel.

What replica versions use

  • Movements: ETA 2836-2, Sea-Gull ST16, or a generic 2813 with a GMT plate. Some add engraved rotor plates that copy Rolex markings.
  • Cases: 316L stainless steel with gold plating of 3 to 5 microns, or PVD coating.
  • Weight: a plated steel case head weighs about 30 grams less than a solid 18 ct gold case head.
  • Crystal: sapphire on better copies, mineral glass on cheap ones.
  • Day and night disc: fixed or missing on low-tier copies.
  • Prices: about USD 100 to USD 450.

Points that differ from the genuine watch

  1. Metal. The genuine case is 18 ct gold and carries a hallmark. Copies are steel with plating.
  2. Movement. Calibre 3180 is made in-house and holds a chronometer certificate. Copies use third-party ebauches with no certificate.
  3. Dial print. The Cellini script, the coronet, and the index polish are the first details to inspect.
  4. Caseback and lugs. The genuine watch has a reference number and a serial engraving. Most copies do not match.
  5. Strap. Genuine uses alligator and a gold buckle. Copies use embossed leather and a plated buckle.

Legal status in the United States

Counterfeit watches are illegal to import, sell, or traffic in the United States. 18 U.S.C. 2320 covers trafficking in counterfeit goods. U.S. Customs and Border Protection states that counterfeit items may be seized even when they are for personal use. Reselling a copy as a genuine watch can lead to fraud claims. Replicas carry no warranty and no factory service.

Buying notes

Ask about the movement before the dial. A seller who lists a Swiss ETA should name the caliber. Ask for the case metal and the plating thickness in microns. Weigh the watch head if you can. A 39 mm solid gold case weighs far more than a plated steel one. Check that the day and night disc moves when the second zone is set. Low-end copies often have a fixed disc. Second-hand prices for the genuine 50529 sit below the original retail price, and resale value for any copy is close to zero.

Two time zone dress watches exist at many price points. The Longines Master Collection GMT and the Nomos Glashutte Zurich Weltzeit are two examples. Neither copies the Cellini design.