Longines
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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: Longines
Longines is a Swiss luxury brand in the mid-range price segment (1,000–5,000 EUR), part of the Swatch Group. The brand is frequently counterfeited, primarily Heritage models and the HydroConquest. Fakes range from low-tier street copies to mid-tier replicas fitted with Asian clone movements.
- Movement finish: Genuine ETA/L888 movements show machine-applied perlage on the rotor and clean Côtes de Genève on the bridges. Fakes often feature printed or coarsely ground decoration.
- Longines lettering on the dial: On genuine examples, perfectly symmetrical with crisp serifs and even color. Fakes show blurry edges, inconsistent letter heights, and incorrect typeface.
- Crown details: Genuine crowns feature a deeply struck logo with sharp edges and clean knurling. Fake crowns display a flat, often asymmetric logo.
- Date disc: Genuine examples use the Swatch Group standard with centered, crisply printed text. Fakes often have digits that are too small or too large, the wrong typeface, or poor centering.
Serial number format: Since 2007, Longines has primarily used 8-digit serial numbers in which the first two digits often encode the production year. Older models (pre-2007) feature variable formats. The serial number is deeply and evenly engraved into the caseback, often also between the lug ends. Modern models may feature alphanumeric combinations. Fakes frequently display numbers that are too shallow, laser-engraved, with a V-shaped rather than U-shaped profile.
Further sources
Buying guide: Longines
What drives the price here
At $42,405 the watch sells well if the condition is right. A market rule of thumb: a complete set with box, papers and warranty card brings 10 to 15 percent more than the bare watch. Buying without papers can pay off, but you take the same discount again later when you resell.
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 Longines 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 .
- 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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