Omega Speedmaster Co-Axial Chronometer Chronograph 38mm
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. O32430385055001 — Variants and collector names
Known as: Speedy 38, Speedy 38 MOP, Speedmaster 38 Diamond MOP
Production phases and changes
- 2024: Omega expands the Speedmaster 38 collection with 8 new models featuring a bezel paved with 52 diamonds (~1.5 ct) in Sedna Gold, Moonshine Gold and steel (brown/green PVD dials). These carry ref. numbers 324.15/18/55/58 and are to be distinguished from the 324.30.38.50.55.001 (white ceramic tachymeter).
Movement variants
- 3330 (2017–today) · 28800 bph
Bezel variants
- Speedmaster-38-Weiss-Keramik-Tachymeter
Dial variants
- MOP Diamond Speedy 38 — 3 oval subdials with diamond rings; 12h counter at 9h, 30min counter at 3h, small seconds + date at 6h; rhodium-plated baton indices
Crystal variants
- Saphir-AR-beidseitig-Speedmaster38-38mm
Bracelet variants
- Speedmaster 38 3-Link Stahl poliert/gebürstet 20mm Ref. Speedy38-3Link-Steel-20mm-2017
The Omega Speedmaster 38 reference 324.30.38.50.55.001 has kept its mother-of-pearl diamond bezel in the lineup without a single change — collectors know it as the Speedy 38 MOP or Speedmaster 38 Diamond MOP. The white ceramic tachymeter on the bezel remains its visual signature, and the mother-of-pearl dial with diamond indices runs in our database under the name MOP Diamond Speedy 38.
## Eight New Siblings, One Unchanged Original
In 2024, Omega expanded the Speedmaster 38 family significantly: 8 new models with 52 diamonds pavé-set into the bezel, totaling around 1.5 carats, in Sedna Gold, Moonshine Gold, and steel with a brown or green PVD dial. These new references carry the numbers 324.15, 324.18, 324.55, and 324.58 — the only thing they share with the 324.30.38.50.55.001 is the case size. Anyone searching for the 55.001 can easily mistake it for one of the newcomers and end up buying a different piece: the ceramic-tachymeter original keeps running alongside them, with no model changeover.
## Caliber 3330 Under the Hood
Powering the 38mm Speedy is the caliber 3330, Omega's mid-size Co-Axial chronograph movement. On a watch with such an elaborately set bezel and a mother-of-pearl dial, that's no technical footnote — the chronograph remains fully functional, not a pure diamond showpiece without mechanical substance.
For valuation purposes, what matters most for this reference is the clear distinction from the 2024 newcomers: same family, different execution, different reference number.
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 Speedmaster Co-Axial Chronometer Chronograph 38mm
Entry into Omega
At $7,658 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 Speedmaster Co-Axial Chronometer Chronograph 38mm 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 Speedmaster Co-Axial Chronometer Chronograph 38mm.
- 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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