Short answer

The "Coke" is the red and black bezel on the Rolex GMT-Master II, most closely tied to reference 16710, an aluminum-insert model Rolex built from 1989 to 2007. No current catalog GMT-Master II uses a red and black ceramic insert, so a replica sold as a Coke is either a copy of the vintage 16710 or a fantasy build that Rolex never produced. Judge the watch against the exact reference it claims to copy, then check bezel color, case geometry, dial details, GMT function, and bracelet fit in that order.

Before you start

  • Pin down the reference being copied: 16710, 16700, or a modern ceramic model. Keep reference photos on hand for comparison.
  • Use a jeweler's loupe or a phone macro lens. Most tells sit inside a 5 mm area.
  • Get the return window and refund terms in writing before payment.
  • Plan to test the movement. A GMT watch has functions a three-hand watch cannot fake.

Inspection steps

  1. Confirm the reference. Match the case, bezel material, and bracelet style to one genuine model. If the seller mixes a ceramic insert with a 16710 case, stop there.
  2. Check the bezel insert colors. The red should be deep and even, the black true black. Replicas often show a maroon or orange tint on the red half and a gray cast on the black.
  3. Read the bezel font. Genuine 16710 inserts use thin, clean numerals with even spacing. Look for thick strokes, uneven 22 and 24 numerals, and sloppy triangle markers.
  4. Measure the case and lugs. Lug width, crown guard shape, and case flank angles should match the reference. Soft, rounded lugs are a common replica flaw.
  5. Inspect the dial. Check the coronet shape, index alignment, and print weight. The GMT hand should reach the chapter ring and stack cleanly under the minute hand.
  6. Test the GMT function. Set the hour hand to jump independently and confirm the 24-hour hand stays fixed. Confirm the date changes at midnight on the hour hand, not the GMT hand.
  7. Check the bracelet and clasp. Look for solid end-link fit with no gaps, correct reference stamps, and a clasp that closes with a firm click.
  8. Look at the crystal and cyclops. The date should magnify about 2.5 times and sit centered under the cyclops.
  9. Skip the water test. A replica has no verified water resistance. Do not swim or shower with it, and do not trust a pressure rating printed on a card.

Legal note for US buyers

Counterfeit watches are illegal to sell, import, or traffic in the United States. Trademark counterfeiting carries criminal penalties under 18 U.S.C. 2320, and Customs can seize shipments at the border. Buying one for personal use does not make the seller's conduct lawful, and a replica has no Rolex warranty, service support, or parts availability. Treat any inspection as a way to avoid a loss, not a path to a genuine watch.