Omega Seamaster
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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
Lift angle 42° — 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.
Omega Ref. 166.010 — Variants and collector names
Known as: Seamaster Date, Seamaster Chronometer, Seamaster BOR, Crosshair Seamaster
Production phases and changes
- 1962: Introduction of MAPICS reference 166.010; screw-back replaces the snap-back of predecessor 14710; Cal. 562 (non-Chrono) and Cal. 561 (Chrono) as initial movements
- 1966: Upgrade to quickset date: Cal. 562 → Cal. 565 (non-Chrono); Cal. 561 → Cal. 564 (Chrono-certified)
- 1965: Gold-cap variant (gold-plated steel caseback and flanks) of the 166.010 documented
Movement variants
- 561 (1962–1966) · 19800 bph
- 564 (1966–1972) · 19800 bph
- 565 (1966–1972) · 19800 bph
Bracelet variants
- Steelinox Ref. 1039
Serial numbers
- 19000000 – 21000000 (1962–1964) — Early Phase 1 – serial number on movement plate; MAPICS start approx. 19M
- 21000000 – 29000000 (1964–1970) — Mid-production phase; transition to quickset date at ~23–25M (approx. 1966–1967)
- 29000000 – 33000000 (1970–1972) — Late production per select dealer sources; serial number dating at Omega is not sharply defined (movement-assembly lag possible)
## 1962: The Screw-Down Case Back Ends the Snap-Back Era
The reference 166.010 marks a technical break for Omega in 1962. Its predecessors, the CK 2975 from 1958 and the Ref. 14710 from 1959 to 1962, still carried a snap-in case back. With the 166.010, Omega replaces it for the first time with a screw-down case back, a detail collectors still regard today as the turning point for Seamaster water resistance. The starting movements are the caliber 562 in the simple date versions and the chronometer-certified caliber 561 in the chrono versions.
## 1966: Two New Calibers Bring the Quickset Date
Four years later, in 1966, Omega swaps out both movements for successors with quickset date. The caliber 562 becomes the 565, the 561 becomes the 564, both still chronometer-certified. During the transition between movement generations, old and new calibers run in parallel, which makes the early crosshair dials from these years especially rare.
## 1965: The Gold-Cap Variant with Silver Crosshair Dial
Between the two movement generations, a special variant appears in 1965: the 166.010 with a gold-plated steel case back and gold-plated case flanks, the so-called Gold Cap. Paired with a silver crosshair dial, this version ranks among the most visually striking variants of the reference.
## Four Names, One Reference
On the market, the 166.010 circulates under at least four names: Seamaster Date, Seamaster Chronometer, Seamaster BOR, and Crosshair Seamaster. In the end, what matters for valuation isn't the name but the combination of caliber, case back, and dial, which clearly places each individual watch within one of the three movement phases between 1962 and 1966.
Brand profile: Omega
Omega is the second most counterfeited Swiss watch brand. The Speedmaster and Seamaster are especially targeted. Pay close attention to movement details (Co-Axial) and dial textures.
- Speedmaster: The chronograph reset hand must snap back precisely to 12 o'clock — fakes stop 1–3 seconds off or wobble
- Speedmaster (Hesalite): The Omega logo is micro-laser-etched on the UNDERSIDE of the Hesalite crystal — only visible at a specific angle and in the right light — fakes omit it or place it incorrectly
- Seamaster: The wave-pattern dial must be ENGRAVED (tactile relief) — printed/flat wave lines = fake
- DON (Dot Over Ninety): small dot ABOVE the '90' on the Speedmaster tachymeter bezel — position/size often wrong on fakes
Serial number format: Omega serial number: 8-digit number on the caseback or between the lugs (on older models). Since ~2018 engraved on the caseback at 6 o'clock. Format: purely numeric. Verifiable on the Omega website with an extract from the archive.
Further sources
Buying guide: Omega Seamaster
Entry into Omega
At $1,745 this reference is one of the more affordable ways to wear a Omega 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 48.0 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 Omega Seamaster 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 Seamaster.
- 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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