Is your Tank Française
the real deal?
The Cartier Tank Française is one of the most iconic and counterfeited Cartier models, prized for its distinctive chain-link integrated bracelet. Its jewelry-like design and high demand make it a prime target for sophisticated fakes. Here's how to tell the difference.
How to authenticate a Tank Française
Integrated Bracelet Link Precision
The Tank Française's signature chain-link bracelet should have perfectly flush, uniform links that flow seamlessly from the case. Each link should sit flat with no visible gaps between them. The articulation should be smooth and supple. Counterfeits often have links with visible gaps, uneven spacing, or a stiff, clunky feel when the bracelet is draped.
Roman Numeral Printing & Secret Signature
The dial features black Roman numerals on a silver-white guilloché or sunburst surface. At the VII (7 o'clock) position, the word "CARTIER" is hidden within the Roman numeral as a micro-engraved secret signature. Use a loupe or macro lens — the text should be sharp and legible. Fakes often omit this detail or render it as a blurry smudge.
Blue Sapphire Cabochon Crown
The crown is topped with a blue synthetic sapphire cabochon, a hallmark of Cartier watches. It should be a rich, saturated blue with a smooth, domed surface and no visible bubbles or inclusions. The cabochon should be securely set with no wobble. Counterfeits often use glass or painted plastic that appears lighter in color, scratches easily, or has a flat rather than domed profile.
Sword-Shaped Blued Steel Hands
Genuine Cartier Tank Française watches feature sword-shaped (épée) hands made from blued steel. The blue color is achieved through heat-treatment, giving the hands a deep, lustrous blue that shifts tone in different lighting. On counterfeits, the hands are typically painted blue over steel or plastic, resulting in a flat, uniform blue without the characteristic depth and color shift.
Case Proportions & Shape
The Tank Française has a distinctive rectangular case with softly rounded edges and integrated lugs that merge into the bracelet. The proportions are very specific — the case should not appear too square or too elongated. Compare the aspect ratio against official Cartier product images. Fakes often get the width-to-height ratio slightly wrong, making the case look subtly off.
Case Back Engravings
The case back should have the Cartier logo, reference number, serial number, "WATER RESISTANT" marking, and metal type clearly engraved. On genuine pieces, the engravings are crisp, evenly spaced, and use Cartier's proprietary font. The four case back screws (on steel models) should be perfectly aligned. Counterfeits often have shallow engravings, misaligned screws, or incorrect font styling.
Tank Française counterfeit warning signs
Bracelet Links with Visible Gaps
The defining feature of the Tank Française is its chain-link bracelet, and this is where counterfeits fail most often. On a genuine watch, the links sit perfectly flush with no visible gaps between them when the bracelet is laid flat. Fakes often have noticeable spaces between links, uneven link widths, or links that do not articulate smoothly. The transition from case to bracelet should be completely seamless.
Missing Secret Signature at VII
Every genuine Cartier Tank Française has the word "CARTIER" micro-engraved within the VII Roman numeral on the dial. This secret signature is a key authentication marker that many counterfeiters either omit entirely or attempt poorly. Use a 10x loupe to inspect — the letters should be crisp and cleanly integrated into the numeral. A missing or illegible signature is a strong indicator of a fake.
Painted Hands Instead of Blued Steel
Genuine Cartier hands are heat-treated blued steel, which produces a deep, rich blue that changes hue depending on the viewing angle and lighting. Counterfeit hands are typically painted or coated, resulting in a flat, uniform blue that does not shift. Under magnification, painted hands may show brush strokes or uneven coating, while genuine blued steel has a smooth, mirror-like surface.
Incorrect Case Aspect Ratio
The Tank Française has very specific case dimensions, and counterfeiters frequently get the width-to-height ratio wrong. A common tell is a case that appears too square (not elongated enough) or too narrow. The rounded edges at the corners should have a consistent radius. Compare side-by-side with official Cartier dimensions for the specific size (small, medium, or large) to verify correctness.
Scan your Tank Française now
Upload a few photos and get an AI-powered authenticity report in seconds. Your first scan is free.
Start ScanningFor high-value purchases, we recommend pairing your AI scan with an in-person inspection by a certified watchmaker for complete peace of mind.
Frequently asked questions
What is the difference between the Tank Française, Tank Solo, and Tank Must?
The Tank Française features a distinctive chain-link integrated bracelet that flows seamlessly from the case, giving it a jewelry-like appearance. The Tank Solo (now discontinued) had a cleaner, more minimalist rectangular case with a traditional leather strap or metal bracelet. The Tank Must is the current entry-level Tank with a simple rectangular case, available in various dial colors and with leather or steel bracelet options. The Française is the most recognizable of the three due to its unique integrated bracelet design.
What movement does the Cartier Tank Française use?
The small and medium Cartier Tank Française models use a high-accuracy quartz movement, while the large size houses an automatic (self-winding) mechanical movement. The current quartz models use the Cartier caliber 057, and the automatic large model uses the Cartier caliber 1847 MC. When authenticating, the movement type must match the size of the case — a small Tank Française with a claimed automatic movement would be suspect.
What sizes is the Cartier Tank Française available in?
The current Cartier Tank Française comes in three sizes: small (25.7mm x 21.2mm), medium (32mm x 27mm), and large (36.7mm x 30.5mm). The small and medium use quartz movements, while the large is automatic. All sizes feature the signature chain-link integrated bracelet. The medium is the most popular size, offering a balanced proportion that works on most wrist sizes.