Jaeger-LeCoultre Master Ultra Thin
17 % 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.
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Technical data
Brand profile: Jaeger-LeCoultre
Swiss luxury manufacture (founded 1833) in the upper price segment ($5,715–$171,450+), known for the Reverso and complicated watches. Medium to high fake risk for Reverso, Polaris, and Master lines. Super clones exist, but movement quality and finishing usually betray fakes.
- Movement finishing: Genuine JLC pieces show precise perlage on the rotor and plates, sharp anglage on bridge edges, and polished screw heads. Fakes have messy or flat perlage and dull edges.
- Reverso flip mechanism: The original has smooth, precise resistance when flipping with a clean, exact snap into position. Fakes have loose play, creaking noises, or a jerky action.
- Guilloché (Reverso case back): Genuine guilloché is deep and uniform with sharp lines and natural light play. Fakes show a shallow, often laser-etched or stamped pattern with uneven depths.
- Dial print quality: JLC has extremely sharp indices and text with no bleeding. Fakes show blurry edges, uneven color, and the wrong font (too thick/thin).
Serial number format: Serial number on case back and movement must match. Engraving must be sharp, uniformly deep (approx. 0.1mm), and centered. Fakes often show shallower engravings, the wrong font (too bold/thin), or discrepancies between case and movement. On the Reverso, the number sits on the inside of the flip frame — check position and depth.
Further sources
Buying guide: Jaeger-LeCoultre Master Ultra Thin
Market situation and price range
At $26,746 the Master Ultra Thin sits in a segment where first owners sell regularly — clean pieces with box and papers are not uncommon. The jump from "good" to "very good" usually costs 1,000 to 2,000 euros more at purchase. You get that premium back on resale if the condition is preserved.
Watch out for swings: This reference has an above-average volatility of 20.9 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 Jaeger-LeCoultre Master Ultra Thin 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 Master Ultra Thin.
- 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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