What a Seamaster 300M 210.30 Sells for in Bangkok — October 2026
The 210.30 launched in 2018, replacing the twelve-year-old 212.30. Major changes: caliber 8800 (Master Chronometer in-house) replacing caliber 2500, ceramic bezel and dial, and a conical helium escape valve that operates while diving without needing to be unscrewed.
Comparing it with the rest of the family? See Omega Seamaster prices for every reference.
Estimated price bands for the blue 210.30.42.20.03.001 as of October 2026. They are the median of five index and sold figures: WatchCharts market prices of US$4,321, US$4,458 and US$4,176, Loupe US$4,320 and Loupe's 60-day sold average of US$5,251 on 30 sales. They are converted at ฿32.5/USD and cross-checked against Watchfinder full-set asks of US$5,150–5,420 (about ฿167,000–176,000) and forum asks. They are US and international market figures, not Bangkok transaction records. After the Speedmaster, the Seamaster is among the most traded Omegas in Thailand:
- Low ฿125,000 — 2018–2020 black wave, worn
- Median ฿140,000 — Full-set 2022–2023 blue wave with TH warranty
- High ฿165,000 — NOS 2024 blue wave with stickers
Wave Dial — Seamaster Signature
The 210.30 uses laser-ablated waves on the ceramic dial — depth pattern, not printed.
Khun Ton's checkpoints:
- Wave depth — pattern must be consistent depth across the dial; fakes show printed blue wash
- Ceramic dial finish — proprietary matte finish on ceramic, not enamel
- Hour markers — white gold applique with hand polish
- Date window position — 6 o'clock (not 3 o'clock as on older references); some fakes still use the older position
Colour Variants in Thailand
| Reference | Colour | Median Bangkok 2026 |
|---|---|---|
| 210.30.42.20.03.001 | Blue + steel | ฿140,000 |
| 210.30.42.20.01.001 | Black + steel | No separate market figure; use the blue |
| 210.30.42.20.06.001 | Grey + steel | ฿158,000 |
| 210.32.42.20.04.001 | Green + steel | ฿172,000 |
| 210.30.42.20.10.001 | "No Time To Die" Titanium | ฿245,000 |
The "No Time To Die" limited edition carries a premium driven by constrained supply and James Bond film association. Only the blue 210.30.42.20.03.001 row was re-checked in October 2026; we found no market index figure for the black .01.001, so use the blue figure as a guide, and the grey, green and titanium rows are unverified.
Seamaster 300M vs Rolex Submariner
| Feature | Seamaster 300M 210.30 | Submariner 126610LN |
|---|---|---|
| Size | 42mm | 41mm |
| Water resistance | 300m | 300m |
| HEV | Operates while diving | None |
| Caliber | 8800 (Master Chronometer) | 3235 (Superlative) |
| Retail | US$6,700 US retail (WatchCharts) | ฿410,400 Thai retail |
| Used median | ฿140,000 | ฿420,000 |
| Market vs retail | About 36% below, in USD | About 2% above |
Seamaster trades well below retail pre-owned: WatchCharts puts the blue 210.30 at US$4,321 against US$6,700 US retail. The Submariner trades around its Thai retail price. The reason is supply: Omega doesn't carry Rolex-style supply constraints.
What Bangkok Dealers Pay
| Scenario | Seller payout (blue 2023 full set) |
|---|---|
| Full-set, TH warranty | ฿109,000–฿115,000 |
| Full-set, overseas warranty | ฿100,000–฿108,000 |
| No box, papers | ฿92,000–฿100,000 |
| Loose | ฿82,000–฿90,000 |
Dealers pay 78–82% — lower than Speedmaster because supply is higher and dealer competition tighter.
Price Movement 2022–2026
The 2022–2026 medians this page used to list had no source behind them, so they have been removed. The dated points we can source for the blue 210.30.42.20.03.001, converted at ฿32.5/USD:
- 31 July 2026 — WatchCharts market price US$4,458 (about ฿144,900)
- October 2026 — WatchCharts market price US$4,321 (about ฿140,400), against US$6,700 US retail
- 15 October 2026 — Loupe market price US$4,320 (about ฿140,400); 60-day sold average US$5,251 (about ฿170,700) on 30 sales
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Data sources: