Quick answer
A fake Cartier Must de Cartier watch is a copy of the Must line Cartier sold from 1977 to the early 2000s. Real Must watches used vermeil cases: 925 sterling silver with gold plating at 20 microns. Most fakes use brass or a base metal with plating under 3 microns. That plating wears through in months. Cartier does not service fakes. US Customs can seize them at import.
fake cartier must de cartier watch
What the Must de Cartier line was
Cartier started the Must line in 1977 as a lower-priced entry range. The first watches were the Must de Cartier Tank and the Must de Cartier Vendome. Both used quartz movements, vermeil cases, and a blue synthetic spinel cabochon in the crown. Retail in 1977 ran near $500, about a fifth of a solid gold Tank. Cartier made the line in large numbers. That volume is why fakes are easy to find. The line ended in the early 2000s. Cartier brought back the Tank Must name in 2021 as a steel quartz watch.
Case and plating checks
- Weight. Vermeil holds sterling silver. Brass fakes feel light in the hand.
- Hallmarks. Look for "925" and the Cartier maker's mark on the caseback. Fakes skip one or both.
- Plating wear. Rub the caseback edge. Real 20-micron plating holds for years. Thin plating shows copper or yellow brass under the gold.
- Bezel screws. Real screws sit flush and take a driver. Fake screws are cast into the metal and do not turn.
Dial, hands, and crown
Dial text is the first tell. Real dials print "Must de Cartier" in a set serif face with tight spacing. Fake dials use a heavier font with uneven letter heights. Roman numerals on real dials have crisp inner corners. Fakes round them off. The cabochon on a real crown is a blue synthetic spinel with a dome and a polished surface. Fakes use glass or plastic. Check the "Swiss Made" line at 6 o'clock. It sits inside the minute track on real dials.
Serial numbers and casebacks
Real Must watches have a serial number engraved into the metal. Fakes stamp it or laser-print it. An engraving shows a V-shaped cut. A stamp shows a flat, shallow groove. The serial must match the paperwork and the movement. Cartier uses separate numbers on the case and the movement for some models, so compare against a known reference. A seller who blocks a caseback photo has something to hide.
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Legal status in the US
Counterfeit watches are illegal to import, sell, or traffic in the United States. 18 U.S.C. 2320 sets prison terms up to 10 years for trafficking. US Customs and Border Protection seizes counterfeit goods at the border and destroys them. A personal-use purchase can still be seized, and the buyer loses the money.
Service and resale
Cartier service centers reject counterfeit watches. Independent watchmakers refuse them too, because parts do not fit and the case metal cannot take a polish. Fakes have no resale market. Auction houses and resale platforms remove them when found.