Omega Constellation 36mm Ladies Watch
10 % 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
Omega Ref. O13128362063001 — Variants and collector names
Known as: Constellation 36 Sedna Diamond Leather, Constellation Lady Sedna 63
Movement variants
- 8800 (2021–today) · 25200 bph
Bezel variants
- Constellation-36-Diamond-SednaGold-38stones-2021
Dial variants
- Constellation-36-63-Brown-Diamond-SednaGold-2021 — Sunburst brown (PVD treated), diamond hour indices (0.19 ct), 18K Sedna Gold appliqués (logo, Constellation star, hands), date at 6h
Crystal variants
- Saphir-Dom-AR-beidseitig-Constellation-36mm
Bracelet variants
- Braun Leder Faltschließe Ref. Constellation-36-Leather-Brown-SednaSteel-Foldover-2021
The Omega Constellation in 36 mm has been known for decades as the more understated sibling of the great luxury ladies' complications. Reference O13128362063001 breaks that mold in a very specific way: Sedna Gold, 38 brilliant-cut diamonds on the bezel, a brown dial — and behind it, a Calibre 8800 certified to the same performance standard as Omega's top sports models. For a 36 mm case diameter, none of that is a given.
## Why Sedna Gold Doesn't Fade After a Year
Sedna isn't a marketing label for ordinary rose gold. Omega developed the alloy with a palladium content that holds its characteristic deep-rose colour stable for decades — ordinary 18k rose gold oxidises faster. On this reference, the material is carried through without exception: bezel, hands, hour indices, crown. The brown dial of the 2021 generation (code Constellation-36-63-Brown-Diamond-SednaGold) amplifies this interplay of tones, because brown imposes no contrast — it lets the rose gold breathe.
## Calibre 8800: More Than the Case Deserves
Master Chronometer certification by METAS means: 5 rate accuracy readings across all 5 positions, antimagnetic resistance up to 15,000 Gauss, 60 hours of power reserve. A movement that sits just as comfortably in the Aqua Terra or Seamaster — Omega doesn't build dedicated movements for the Constellation. That's not a drawback. Whoever buys reference O13128362063001 gets the same certified movement as anyone wearing an Omega professional sports watch. The 38 bezel stones sit atop industrially proven mechanics, not compromises.
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 Constellation 36mm Ladies Watch
Market situation and price range
At $17,542 the Constellation 36mm Ladies Watch 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.
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 Constellation 36mm Ladies Watch 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 Constellation 36mm Ladies Watch.
- 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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