Short answer
A fake Clé de Cartier automatic is a copy of Cartier's 2015 Clé model fitted with an automatic movement instead of a quartz one. Prices run from about $80 for a quartz fake sold as an automatic up to $600 for a copy with a decorated Asian movement. The case shape, the key-shaped crown, and the dial print are the three parts that fail a close look. No replica carries a Cartier warranty or Cartier service, and US law treats a sale of goods stamped with the Cartier name as trademark counterfeiting.
The genuine watch in numbers
- Released in 2015. The name comes from the crown, cut in the shape of a key ("clé" in French).
- Steel automatic case measures 40 mm across. Smaller cases exist, and the movement changes with the reference, so check the reference number before comparing.
- Caliber 1847 MC. Automatic winding, 4 Hz (28,800 vph), about 40 hours of power reserve on Cartier's figures.
- Sapphire crystal on the front. Caseback style varies by reference.
- The crown sits flush in the case. A press releases it, and it winds and sets without a pull.
- Retail on the steel automatic sat near $6,000 to $7,000. Used examples trade below that.
What sits inside the fake
Most replicas in the $150 to $300 band use a Miyota 9015, a Seagull ST2130, or an unbranded Chinese clone of an ETA 2824. These are real automatic movements. They keep time. They also carry no Cartier parts, no 1847 MC geometry, and no Cartier regulation. Sellers add an engraved rotor and striped plates to look like a manufacture calibre. Ask for the movement name in writing. A seller who claims "Swiss ETA" at $200 is guessing.
Where a fake fails
- Crown action. The original key crown releases on a light press and locks with a firm click. Copies run stiff or loose, and some use a plain friction fit with a cosmetic slot.
- Dial print. The Cartier script and the rail track on replicas run thick. Compare stroke width against a macro photo of an original.
- Hands. Blued steel on the original. Paint on most copies.
- Case finish. Brushed flanks and polished bevels meet at a sharp line on the original. Copies round that line.
- Caseback engraving. Depth and font spacing drift on replicas. Reference numbers repeat across batches.
Price tiers
- $50 to $120: quartz movement, printed dial, mineral glass.
- $150 to $300: automatic movement, sapphire glass on the better builds, engraved rotor.
- $350 to $600: closer case profile and better dial print, still an Asian movement with no Cartier content.
No tier matches the original's tolerance. The gap between a top replica and a used genuine steel Clé narrows each year.
Checks before money changes hands
- Request a photo of the movement through the caseback.
- Get the movement name and the return window in writing.
- Do not trust a depth rating printed on a $120 fake. Have a watchmaker pressure test the case before any water contact.
- Compare the crown action to video of an original before you pay.
- Check the seller's refund terms for customs seizure. A seized parcel is a common outcome.
US legal position
Counterfeit watches carry the Cartier name and the Cartier logo. Under 18 U.S.C. § 2320, trafficking in counterfeit goods is a federal offense with a first-offense maximum of 10 years. CBP seizes counterfeit shipments at the border, and the personal-use allowance does not cover counterfeit items. Selling a fake as genuine is fraud under state law. Buying one for personal wear is lower risk than selling, but the item stays contraband and carries no recourse if it fails.
Bottom line
A fake Clé de Cartier automatic is a $80 to $600 watch with a real automatic movement and a copied exterior. It will not pass a look at the crown or the dial print. It has no warranty, no service path, and no resale value. Budget for a pressure test and treat any depth rating as unverified.