Blancpain Fifty Fathoms
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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.
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Brand profile: Blancpain
Blancpain is a Swiss luxury watch manufacturer in the upper price segment (8,000–500,000+ EUR), known for the Fifty Fathoms dive watches and classic complications. Primary counterfeiting targets are the Fifty Fathoms, Villeret, and Léman models. The brand is counterfeited less frequently than Rolex/Omega, but Super Clones of the Fifty Fathoms have increased significantly in recent years.
- Movement finish: Originals use manufacture movements (Cal. 1150, 1315, 1335, 6654) with specific Côtes de Genève, blued screws, and a gold rotor with Blancpain engraving. Fakes typically use ETA/Miyota with printed decorations and poor finish quality.
- Lume: Blancpain uses a special LumiNova in warm beige/cream tones on vintage-inspired models. Fakes often have lume that is too white, too greenish, or unevenly applied with unclean edges.
- Date disc: The original has a specific typeface with a characteristic '4' and '9', perfectly centered in the window with anti-reflective coating on both sides. Fakes often show missing AR coating, the wrong typeface, or alignment errors.
- Crown details: Original crowns feature a finely engraved 'JB' logo (Jehan-Jacques Blancpain) with precise lines and specific knurling. Fake crowns show blurred engravings, incorrect proportions, or overly smooth surfaces.
Serial number format: From the 2000s onward, Blancpain uses a format of 4 digits, hyphen, 4 digits (e.g. 0856-1234). Serial numbers are engraved both on the case (between the lugs at 6 o'clock) and on the movement. Newer models (from ~2010) may feature longer alphanumeric serial numbers. The engraving is precise with uniform depth and sharp edges — never etched or laser-engraved with discoloration. Fakes often show engravings that are too shallow or use the wrong typeface.
Further sources
Buying guide: Blancpain Fifty Fathoms
What matters at this price point
At $208,119 we are no longer talking about an everyday watch but a collector's piece. Every detail drives the price: an original dial can be worth five figures more than a service dial, missing papers noticeably depress the value, and an over-polished bezel is effectively lost money. Anyone buying in this range should take their time and, when in doubt, take a second look.
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 Blancpain Fifty Fathoms 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 Fifty Fathoms.
- 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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