What a fake Clé de Cartier Large is

A fake Clé de Cartier Large is a replica of Cartier's 40mm Clé de Cartier wristwatch. The genuine model uses a key-shaped crown, a silvered dial with Roman numerals, and the in-house 1847 MC automatic movement. Replica quality ranges from cheap quartz copies to high-end super clones that match the case dimensions, dial printing, and movement layout. The guide below explains how to tell them apart.

Prerequisites

  • Know the genuine specs: 40mm case, 11.5mm thickness, 30m water resistance, sapphire crystal, blue spinel crown.
  • Have a caliper or ruler for case measurements.
  • Ask the seller for high-resolution photos of the crown, dial, and caseback.
  • Confirm the return policy before you pay.

How to inspect a fake Clé de Cartier Large

  1. Measure the case diameter across the bezel. The genuine large model is 40mm. Many fakes come in at 39mm or 41mm.
  2. Check the crown shape. It should look like a key head with a blue spinel or cabochon. Low-grade fakes use a plastic or glass stone that looks flat.
  3. Examine the dial printing. Roman numerals should be crisp and evenly spaced. The rail-track minute ring should align with the hour markers.
  4. Look at the date window at 3 o'clock. The font should match Cartier's and sit centered in the aperture. Cheap fakes have off-center or fuzzy numbers.
  5. Inspect the hands. They are sword-shaped and rhodium-plated on steel models. A fake may have rough edges or wrong length.
  6. Test the movement. Genuine uses the 1847 MC automatic. High-end fakes use a Swiss ETA or a clone. Low-end fakes use a cheap Chinese automatic or quartz.
  7. Read the caseback engravings. They should be deep, sharp, and consistent. Look for "Cartier", "Clé de Cartier", "Swiss Made", and a serial number.
  8. Weigh the watch. A genuine steel Clé de Cartier Large weighs about 120 grams with a bracelet. Fakes often feel lighter or oddly heavy.
  9. Check the crystal. It should be sapphire with anti-reflective coating. Tap it gently; mineral glass sounds different and scratches easier.
  10. Examine the strap or bracelet. Genuine models have a quick-release system. Many fakes use standard spring bars.

Common flaws in low-grade fakes

  • Wrong crown shape or a dull, non-reflective stone.
  • Misaligned date wheel or a date font that is too bold.
  • Printed dial instead of applied Roman numerals.
  • Caseback engravings that are shallow or off-center.
  • Movement that ticks instead of sweeping (quartz).

How to pick a high-quality replica

  1. Ask for the movement type. A Swiss ETA 2892 or a high-grade clone is a good sign.
  2. Request close-up photos of the crown and dial under natural light.
  3. Confirm the case size with a photo next to a ruler.
  4. Check reviews from other buyers who own the same model.
  5. Buy from a seller who offers a warranty and returns.