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Movement tier: unclassified
Small case: suits slender wrists (under 6.5 in / 16.5 cm)
30 mm case. A compact, elegant wear. Particularly at home on narrower wrists where larger cases can overhang.
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Authentication
The integrated bracelet-to-case transition and the crown sapphire cabochon are the two highest-stakes checks on the Tank Francaise.
Known issues in the market
- The integrated link-to-case transition develops gaps after impact or improper bracelet adjustment; this is irreversible without factory repair.
- The blue sapphire cabochon on the crown is the most commonly damaged single component; loose or discolored cabochons are widespread on secondary market examples.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| bracelet | Integrated bracelet-to-case transition | Seamless transition from bracelet link to case on all four sides with no visible gap | Any gap between case and bracelet at the integration point; repair or impact damage |
| crown | Blue sapphire cabochon condition | Uniformly blue, firmly set, undamaged cabochon with consistent color saturation | Loose, chipped, discolored, or missing cabochon; most common damage point on Cartier watches |
Common legitimate replacements
- Crown sapphire cabochons are replaced; Cartier service replacements use genuine sapphire, aftermarket replacements may use glass.
- Integrated bracelet links are not individually replaceable on some generations; a cracked link may require full bracelet replacement.
Expert resources: Cartier WJTA0046 product page. Cartier service documentation for Tank Francaise bracelet integration.
Authentication guide
Last reviewed June 2026
The Tank Française is defined by its integrated bracelet construction with square links that flow directly from the case. The bracelet link geometry and the case-to-bracelet transition are the primary authentication points. This reference is steel and yellow gold two-tone.




