A fake Cartier Tank usually gives itself away in three places: the dial printing, the cabochon in the crown, and the caseback engraving. Genuine Tanks carry crisp Roman numerals, a blue cabochon set flush into the winding crown, and a caseback serial number that matches the warranty card. Counterfeits fail at least one of those checks, and budget fakes fail all three.
What counts as a fake Cartier Tank?
Fakes fall into three rough tiers. Street-market copies run $20 to $60 and use printed dials, chrome-plated bases, and unbranded quartz movements. Mid-tier "AAA" fakes cost $150 to $400 and copy the case shape but miss the finishing. High-end "1:1" or super clones run $500 and up and can fool a casual buyer at arm's length.
The higher the tier, the more you need a loupe or a watchmaker to confirm the difference. Super clones often use the correct case dimensions and even close copies of the Cartier movement architecture.
How do you spot a fake Cartier Tank?
1. Dial printing and numerals
Cartier prints numerals with sharp serifs and even stroke weight. Fakes show fuzzy edges, uneven spacing, or an off-center date window. On vintage models, look for the hidden "secret signature" worked into the VII or X numeral.
2. Crown and cabochon
The cabochon should sit level in the crown, not proud or tilted. Fake stones are usually plastic or glass with visible bubbles and a dull, flat tone. Genuine cabochons have depth and a smooth polish.
3. Case shape, lugs, and finishing
The Tank case is a strict rectangle with straight, parallel brancards and a subtle curve at the lugs. Fakes often show soft corners, uneven brushing, or a case that is 1 to 2 mm too thick. Run a fingernail along the case edge: genuine finishing feels uniform, fakes feel gritty.
4. Caseback and serial number
Cartier engraves the reference number, serial number, and case material on the caseback. The engraving should be deep, clean, and centered. Stamped or laser-etched numbers that look shallow or sit off-axis are a warning sign.
5. Movement type
A steel Tank Must is quartz, while a Tank Louis Cartier uses a mechanical in-house caliber. If a seller calls a quartz watch "mechanical" or the seconds hand ticks when it should sweep, walk away. A watchmaker can open the caseback in minutes and confirm the caliber.
6. Strap, clasp, and hardware
Genuine straps are alligator or calf with tight, even stitching and a signed buckle. Fakes use embossed leather with glue residue and mismatched hardware plating.
7. Box, papers, and price
A complete set includes the box, warranty card, and manual with matching numbers. A gold Tank Louis Cartier listed at $900, or a steel Tank Must at $300, is counterfeit or stolen. Real steel Tanks start around $3,000 new.
Quick counterfeit checklist
- Serial on the caseback matches the warranty card
- Cabochon is level, deep blue, and free of bubbles
- Roman numerals are sharp with even spacing
- Case is 6 to 8 mm thin on most references
- Movement matches the reference (quartz vs mechanical)
- Buckle is signed and the strap stitching is tight
- Price sits near current market value
- Seller allows a pre-purchase inspection
Is buying a fake Cartier Tank illegal in the US?
Selling or trafficking counterfeits is illegal under US trademark law, and US Customs can seize counterfeit watches at the border. Buying one for personal use is rarely prosecuted, but the watch carries no warranty and Cartier service centers will refuse it. Resale value is effectively zero.
How can you verify a Cartier Tank before you buy?
Ask for the reference and serial number in writing, then compare them against Cartier records. A boutique or authorized service center can confirm authenticity and service history. Independent watchmakers also verify movements for a small fee, which is cheap insurance on any four-figure purchase.
FAQ
Does a real Cartier Tank have a serial number?
Yes. Modern Tanks carry a reference number and a unique serial number engraved on the caseback, and both should appear on the warranty card.
Are super clone Cartier Tanks hard to spot?
Yes, the best ones copy case dimensions and dial details closely. Only a watchmaker examining the movement and caseback engraving can confirm the difference with certainty.
How much does a genuine Cartier Tank cost?
A new steel Tank Must starts near $3,000, while a gold Tank Louis Cartier runs into five figures. Any listing far below those numbers is a counterfeit.