Omega Seamaster Diver 300M Grey Dial 42mm Automatic Mens
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. O21032422006002 — Variants and collector names
Known as: SD300M No-Date Grey, Diver 300M No-Date Grey PVD, Seamaster No-Date Grey Titanium Bezel
Movement variants
- 8806 (2024–today) · 25200 bph
Bezel variants
- SD300M-NoDate-Grade5-Ti-Positive-60min
Dial variants
- Silver Surfer Dial — OMEGA logo printed in black / SEAMASTER 300 / no date window / polished skeletonized hands and indexes
Crystal variants
- Saphir-gewoelbt-AR-beidseitig-SD300M-NoDate-42
Bracelet variants
- Integrierter Kautschuk Grau (210.32.42.20.06.002) Ref. SD300M-NoDate-Rubber-Grey-2024
Reference O21032422006002 is the grey PVD version of the Seamaster Diver 300M, known among collectors under three names: SD300M No-Date Grey, Diver 300M No-Date Grey PVD, Seamaster No-Date Grey Titanium Bezel. The dial's nickname, Silver Surfer, comes from its vertically brushed grey tone, which shifts between anthracite and light grey depending on the light. The first Seamaster Professional 300M launched in 1993, two years before James Bond strapped one on in GoldenEye. O21032422006002 carries that lineage forward, but without a date window, a deliberate reduction purists have been asking for since the model's 2018 reintroduction.
## Caliber 8806 Under the Hood
Inside beats Caliber 8806, Omega's Co-Axial Master Chronometer movement with 55 hours of power reserve, METAS-certified against magnetic fields up to 15,000 gauss. The bezel carries the code SD300M-NoDate-Grade5-Ti-Positive-60min: Grade 5 titanium with a 60-minute scale, noticeably lighter than the steel version and markedly more scratch-resistant in everyday wear. No production changes are documented for this reference, a sign of a stable, unaltered production run since launch.
## What Makes This Combination Rare
A titanium bezel paired with the Silver Surfer dial doesn't come up often within the 300M family. Anyone hunting for this exact pairing ends up at O21032422006002 almost by default. For a reliable read on current market value and an authenticity check, it's worth looking at ChronoCheck's current data on this reference.
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 Diver 300M Grey Dial 42mm Automatic Mens
Entry into Omega
At $7,061 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 Seamaster Diver 300M Grey Dial 42mm Automatic Mens 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 Diver 300M Grey Dial 42mm Automatic Mens.
- 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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