Zenith
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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: Zenith
Zenith is a Swiss luxury watch brand in the upper segment (3.000–50.000+ EUR), best known for the legendary El Primero caliber. The most commonly counterfeited pieces are El Primero chronographs and Defy models. Fakes range from cheap quartz variants to super clones built on modified Valjoux movements.
- El Primero caliber: The genuine article beats at 36.000 vph (5 Hz, 10 ticks/second); fakes typically run at 28.800 vph (4 Hz). The seconds hand must sweep with extreme fluidity, with virtually no visible stepping.
- Dial guillochage: On Defy and Elite models the guillochage must be precise, deep, and even. Fakes often feature flat, irregular, or printed patterns.
- Star in the logo: The Zenith star above the wordmark must be perfectly symmetrical with sharp, even points. Fakes display asymmetric or sloppily applied stars.
- Case finishing and polish: Genuine Zenith watches have flawless finishing with crisp transitions between brushed and polished surfaces. Fakes show uneven transitions and rounded edges.
Serial number format: Modern Zenith serial numbers are alphanumeric (e.g. A12345678) and are located between the lugs at 6 o'clock on the caseback, engraved with machine precision. Older models carry numeric-only serials. The reference number appears separately on the caseback or papers in the format XX.XXXX.XXX.
Further sources
Buying guide: Zenith
Entry into Zenith
At $3,787 this reference is one of the more affordable ways to wear a Zenith 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.
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 Zenith 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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