Answer

Fake Rotonde 4000 is a search term for replica Cartier Rotonde de Cartier watches. The number 4000 is not a Cartier reference. It appears in wholesale catalogs as a seller code or batch number. Genuine Cartier Rotonde models use references like W1556366. Replica versions copy the round case, Roman numerals, and guilloché dial. They use third-party movements. Prices range from $200 to $800. Quality varies by factory.

What the genuine Rotonde de Cartier is

Cartier introduced the Rotonde de Cartier collection in 2008. It features round cases, 40mm to 45mm. Many models have a tourbillon, minute repeater, or perpetual calendar. The collection sits above the Ballon Bleu and Santos lines. Cartier makes the Rotonde in precious metals: rose gold, white gold, platinum.

Why "4000" appears in replica listings

Replica sellers use internal codes. "4000" often labels a specific case size or movement batch. For example, one wholesale listing may call a 42mm Rotonde with a Miyota 9015 "Rotonde 4000". Another listing may use "4000" for a different dial color. The code does not correspond to any Cartier caliber. Cartier movements include the 1904 MC, 1847 MC, and 430 MC. No Cartier movement is named 4000.

Common specs of a fake Rotonde 4000

Most fakes use a 316L stainless steel case with gold plating. Case diameter is 42mm. Thickness is 12mm to 14mm. Movements are Chinese or Japanese automatic. Examples: Seagull ST25, Miyota 9015. The dial has printed Roman numerals. The crown is set with a blue spinel or synthetic sapphire. Sapphire crystal is common. Water resistance is nominal, usually 3 ATM. Strap is leather or alligator-pattern leather.

How to identify a fake Rotonde 4000

Check the caseback. Genuine Rotonde has engraved reference numbers and a serial. Fakes often have laser-etched or missing numbers. Check the movement. Genuine Cartier uses in-house or high-grade Swiss movements. Fakes use visible third-party rotors. Check the dial print. Genuine Cartier uses crisp, raised printing. Fakes have flat, uneven printing. Check the weight. Genuine gold Rotonde weighs 80g to 120g. Fakes weigh 50g to 70g.

Legal status

Counterfeit watches are illegal to sell in the United States. The Trademark Counterfeiting Act of 1984 makes it a federal crime. U.S. Customs and Border Protection seizes counterfeit watches. Buying a fake for personal use is not a federal crime, but importing one can lead to seizure. Cartier actively pursues counterfeiters.