Omega Seamaster Aqua Terra 150M 30mm Ladies Watch White
12 % 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.
What if you had bought back then …
What would a purchase at the median market price back then have become — at today's level of $44,573. A pure return calculation, excluding insurance, servicing and transaction costs.
Data from an aggregated median time series (watch_market_daily). CAGR = Compound Annual Growth Rate, normalized to 365 days. Not an investment recommendation.
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Technical data
Omega Ref. O22055302055001 — Variants and collector names
Known as: Moonshine Gold AT30, My Little Secret AT30, Ladies AT30 Diamond
Movement variants
- 8751 (?–today) · 25200 bph
Bezel variants
- AT30-Diamond-MoonshinGold-46bril
Dial variants
- AT30-MOP-Weiss-55 — SEAMASTER / AQUA TERRA / 150M / Co-Axial Master Chronometer / date at 6H
- AT30-Gruen-60 — OMEGA 12h | SEAMASTER / AQUA TERRA 150M | Date 6h | 11 diamond hour indices
Crystal variants
- Saphir-Dom-AR-beidseitig-AT30
Bracelet variants
- Integriertes Moonshine Gold Armband AT30 Ref. AT30-MoonshinGold-Integrated-PolishedBrushed-2025
The Omega Aqua Terra 30 in Moonshine Gold has been the benchmark for ladies' watches in the premium sports watch segment since its launch. Reference 220.55.30.20.55.001 pairs a 30-millimetre case crafted from Omega's proprietary 18-karat Moonshine Gold — an alloy demonstrably more resistant to colour fading than conventional yellow gold — with a bezel set with 46 brilliant-cut diamonds. Not decoration. A statement.
## The Movement That Gives This Watch Its Core
Beneath the dial, calibre 8751 does the work: a Co-Axial Master Chronometer with METAS certification and magnetic resistance up to 15,000 gauss. For a ladies' watch at this price point, that's far from a given — most competitors fit significantly cheaper base movements here. Power reserve runs to 55 hours; rate accuracy sits between 0 and +5 seconds per day.
## Two Dials, One Clear Hierarchy
The reference comes in two variants on the market: white mother-of-pearl and deep emerald green. The white dial — known among collectors as the AT30-MOP-Weiss — holds stronger resale demand because it reads as timeless. The green, meanwhile, benefits from the tailwind Omega's green variants have been riding since 2022: premiums of 8 to 12 percent above retail are documented on platforms such as Chrono24. Buyers treating this reference as an investment piece reach for the mother-of-pearl. Those after a trend-driven statement choose the green.
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 Aqua Terra 150M 30mm Ladies Watch White
What drives the price here
At $44,573 the watch sells well if the condition is right. A market rule of thumb: a complete set with box, papers and warranty card brings 10 to 15 percent more than the bare watch. Buying without papers can pay off, but you take the same discount again later when you resell.
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 Aqua Terra 150M 30mm Ladies Watch White 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 Aqua Terra 150M 30mm Ladies Watch White.
- 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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