Omega Constellation 41mm Stainless Steel O13133412101001
23 % 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. 131.33.41.21.01.001 — Variants and collector names
Movement variants
- 8900 (2020–today) · 25200 bph
Bezel variants
- Constellation-41-Schwarz-Keramik-Liquidmetal-RomanNumerals
Dial variants
- Black Sun-Brushed — OMEGA logo + Constellation star (applied), date at 6h, faceted rhodium-plated baton indices, rhodium-plated hands
Crystal variants
- Saphir-Dom-AR-beidseitig-Constellation-41
Bracelet variants
- Schwarzes Lederband mit Kautschukfutter, 20mm Ref. Constellation-41-33-Schwarzleder-Kautschuk-20mm
The Omega Constellation ref. 131.33.41.21.01.001 shows just how far Omega has pushed material combinations in the 41mm case class. The black ceramic bezel carries Roman numerals inlaid using the Liquidmetal process — a technique Omega has used for this exact reference line for over a decade. The result is a bezel that needs no paint or stamping to stay sharp for years.
## Caliber 8900: The Real Value Driver
Beneath the dial beats the Caliber 8900, a Co-Axial Master Chronometer movement with a 60-hour power reserve and antimagnetic certification up to 15,000 gauss. That caliber is precisely why the 131-series is valued differently by collectors than older Constellation references running the Caliber 2500 — METAS certification only arrived with the switch to the 8900 family, and it applies to every single watch in this reference family.
## The Dial: Black Sun-Brushed with Rhodium Indices
The dial carries the designation Black Sun-Brushed, tracked internally under the code Constellation-41-01-Black-Sunbrushed-Rhodium. The sunburst effect radiates from the center outward, paired with rhodium-plated indices that produce a noticeably cooler contrast under raking light than the gold-toned variants of the same reference line. When inspecting one, check the consistency of the sunburst finish under two different light sources — on replicas, the pattern often breaks at the hand axes, while on genuine pieces it runs through cleanly.
If you want a current valuation of the 131.33.41.21.01.001, you'll find the full market analysis with ChronoDex classification at chronocheck.de.
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 41mm Stainless Steel O13133412101001
Entry into Omega
At $6,909 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.
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 41mm Stainless Steel O13133412101001 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 41mm Stainless Steel O13133412101001.
- 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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