Cartier used quartz movements in several models that are genuine. The steel Tank Must, the steel Tank Solo, the 28 mm and 33 mm Ballon Bleu, and the Must de Cartier line all ran on quartz at some point. A quartz movement by itself does not prove a watch is fake. Counterfeiters use quartz because the modules cost a few dollars. That is why most low-price fake Cartier watches are quartz.
Cartier models that shipped with quartz
- Tank Must, steel, 2021 to now. Quartz caliber, plus a SolarBeat version.
- Tank Solo, steel, 2004 to 2021. Quartz in the small and large sizes. The Solo XL used an automatic movement.
- Ballon Bleu 28 mm and 33 mm. Quartz. The 36 mm and 42 mm sizes are automatic.
- Must de Cartier, 1970s to 2000s. Vermeil cases with quartz movements.
- Some Santos-Dumont steel variants, 2019 to now. Quartz. Gold versions use mechanical movements.
Movement signs
A quartz movement moves the seconds hand in single steps, one step per second. A mechanical movement sweeps 5 to 8 steps per second. Video and photos show the difference. If a listing says "automatic" and the hand jumps once per second, the description is wrong.
Real Cartier quartz modules come from ETA or from Cartier's own supply. The plate carries a maker mark and "Swiss Made" or "Swiss Parts". Fake modules carry no maker mark, or carry a generic stamp. Common counterfeit modules cost $2 to $8 in bulk.
Dial and case signs
- Secret signature. On dials with Roman numerals, the VII is written as "CARTIER" in the same stroke width as the other numerals. Many fakes copy a standard VII.
- Cabochon. Real crowns hold a synthetic blue spinel with cut facets. Fakes use glass, plastic, or dyed stone, and the color runs light.
- Print quality. Real dials show crisp edges on the numerals and on the "Swiss Made" text. Fakes show ink spread and uneven letter spacing.
- Case back. Reference numbers, serial numbers, and model names are engraved to an even depth. Fakes show shallow laser marks.
- Serial numbers. Fake serials repeat across units. A search of a fake serial returns many listings with the same number.
- Finish. Real cases have sharp lugs. Brushed surfaces meet polished surfaces on a clean line.
Prices and paperwork
A steel Tank Must quartz sells for about $3,000 to $4,000 USD. Counterfeit quartz Cartier watches sell for $30 to $150. A gap that wide has no middle ground. A seller who asks $300 for a "quartz Tank Must" is selling a fake or a stolen item.
Real sets include a box, a guarantee card, and a serial number that matches the case back. Cartier does not run a public serial lookup. A watchmaker can open the case and read the movement in minutes. Cartier service centers refuse work on counterfeits.