Cartier Tank Française
18 % below RRP
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ℹ️ 1-month trend
Price change over the past 30 days. Shows the short-term market movement — relevant if you want to buy or sell soon.
ℹ️ 4-month trend
The central metric behind the momentum score. It filters out short-term swings and shows the true, medium-term market trend of this reference.
ℹ️ Volatility
Annualised price fluctuation. Below 10 % = very stable, 10–20 % = normal, above 20 % = volatile. With high volatility the price can change quickly — in both directions. Be cautious about buying without checking the current price.
ℹ️ Momentum score
ChronoCheck's own indicator from 0 to 100, calculated from the 4-month trend, volatility and market direction.
- Above 60 — Upward trend. Good time to sell, prices are rising.
- 40 – 60 — Neutral. Stable price level, no pressure to act.
- Below 40 — Downward trend. Wait or enter at a good price.
ℹ️ Investment Grade A/B/C/D
ChronoCheck's own rating for each reference. A 0–100 point scale, made up of four weighted components:
- Momentum (40 pts) — trend strength from the momentum score.
- Liquidity (25 pts) — number of active live listings.
- Stability (20 pts) — inverse volatility — the calmer, the better.
- Source robustness (15 pts) — number of independent market sources.
- A · 75+ Trend is right, liquidity good, data broad.
- B · 55–74 Solid, but one component weaker.
- C · 35–54 Average, volatility or market breadth weigh on it.
- D · below 35 Downward or too little data — a collector's piece.
Not investment advice. Pure data analysis from aggregated market sources.
What if you had bought back then …
What would a purchase at the median market price back then have become — at today's level of $4,351. A pure return calculation, excluding insurance, servicing and transaction costs.
Data from an aggregated median time series (watch_market_daily). CAGR = Compound Annual Growth Rate, normalized to 365 days. Not an investment recommendation.
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Technical data
Lift angle 52° — important for timing-machine diagnosis: with this value a watchmaker can correctly measure rate deviation, amplitude and beat error. ChronoCheck verifies such technical details directly from the manufacturers' factory specifications.
Cartier Ref. W51005Q4 — Variants and collector names
Known as: Tank Française Large Two-Tone, TF Large Bicolore, Steel & Gold TF, Tank Française YG/Steel Large
Production phases and changes
- 2009: Switch of the Cartier-wide serial number system: from year-coded numbers to randomized alphanumeric serial numbers
Movement variants
- 120 (1997–2018) · 28800 bph
Bezel variants
- 2302-Bezel-TwoTone-Steel-YG "Two-Tone"
Dial variants
- Large Auto Dial — Guilloché pattern, Roman numerals, date window at 6 o'clock, CARTIER signature
Crystal variants
- Saphirglas-TankFrancaise-2302
Bracelet variants
- Tank Française Integriertes Armband Stahl/18k Gelbgold Ref. 2302-Bracelet-TwoTone-Steel-YG-Integrated
Serial numbers
- AB97XXXX – ABXXXXXXX (1997–2009) — Cartier Pre-2009 format: letter prefix (variable, e.g. AB, CD, EF) followed by a digit sequence, where the first 2 digits correspond to the production year (e.g. '97' = 1997, '05' = 2005). Exact prefix for W51005Q4 not documented.
- ? – ? (2009–2018) — From c. 2009: randomized alphanumeric serial numbers with no embedded year code. Production year cannot be decoded without Cartier documentation.
Brand profile: Cartier
Cartier watches (Santos, Tank, Ballon Bleu) are popular counterfeiting targets. The characteristic design (Roman numerals, blue sword hands) is recognizable, but also replicable.
- Sapphire cabochon crown: on genuine pieces SET IN METAL (bezel setting), on fakes usually GLUED. Test: loupe — adhesive residue around the edge = fake.
- Bracelet screws: genuine Cartier ALWAYS has visible screw slots. Pins = fake.
- 'Swiss Made' at 6 o'clock: MICROPRINT directly below the 6 o'clock marker. Fakes often omit it or print it crooked.
- Guilloché pattern: under 10x loupe EXACTLY parallel and uniformly deep. Irregularities = fake.
Serial number format: Cartier serial numbers: alphanumeric on the case back. Older models: number between the crystal ring and case. Cartier Passport included with new purchase.
Further sources
Buying guide: Cartier Tank Française
Entry into Cartier
At $4,351 this reference is one of the more affordable ways to wear a Cartier on your wrist. That is precisely why many pieces have already passed through several hands — condition varies accordingly. Buyers here should pay particular attention to service history and honest photos from the seller.
Watch out for swings: This reference has an above-average volatility of 76.6 percent. In concrete terms: the price can move by several hundred euros within a few weeks. Check the current value before buying or selling — old listings or auction results from two months ago are of little help.
What to look out for when buying?
- Authenticity: The serial number and reference on the case must match the papers. A professional authenticity check of the Cartier Tank Française reliably rules out counterfeits.
- Condition: Check scratches on the case and bezel — professional refurbishment can leave traces.
- Service history: A documented service by the manufacturer or a certified watchmaker increases the value.
- Scope of delivery: Box, papers and warranty card make a noticeable price difference on the Tank Française.
- Independent certification: The CPS-52 standard covers 52 checkpoints — from the serial number and the timing machine to water resistance. The result is secured on the blockchain and can be verified at any time.
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