Omega Seamaster Diver 300M 210.30.42.20.03.001

“Blue Wave”

B+

Grade B+: solid, selectiveToday's call · Hold

Short termunder 1 yearStrongMid term1 to 3 yearsFairLong term3+ yearsStrong

Rank #8 of 30 rated pieces in the Omega Vault

Retail (2026)$6,700

Typical sale today$4,400Typical range $4,200 to $4,700

Vs retail-34%

1-year0%

Market range: the middle half of 143 recorded eBay sales in the last 12 months.

Open in the interactive VaultLive eBay listings ↗︎

Market price history

Median recorded eBay sale price for each quarter with 3 or more sales. Dashed line marks the 2026 retail price.

Investment scorecard

Momentum50Measured price direction: the median recorded sale of the last 4 months against the median of 8 to 12 months ago. 50 means flat; small samples are pulled toward 50.

Liquidity90How easily it sells: recorded sales in the last 12 months (300 or more scores 100) and eBay's 90-day sell-through rate.

Scarcity30Demand against supply. For modern pieces, how far the market sits above or below current retail, plus a lift if production has ended. For vintage, how rarely one comes up for sale.

Value entry33Where the latest quarter's median sale sits inside its own 3-year range. Buying near the low scores high; buying at the high scores low.

Condition safety90How safe a typical example is: the age of the design, plus how tightly sale prices cluster (a wide spread means condition and originality swing the price).

The story

The blue ceramic version of the 2018 Diver 300M is the modern continuation of the blue wave dial made famous by the Brosnan-era 2531.80.

It shares the 42mm case, helium escape valve and calibre 8800 with the black model.

Blue tends to be the most requested colour in the Diver 300M range.

Pre-owned values sit slightly below the black ceramic version.

Our verdict: The blue Bond look, deep buyer pool and fast sales. Like the black one it gives up about a third of retail, so buy pre-owned.

Configurations

Sizes	42mm
Case & bracelet	Stainless steel
Factory bracelet	Stainless steel bracelet
Factory bezels	Unidirectional blue ceramic bezel with white enamel diving scale
Notable dials	Blue polished ceramic with laser-engraved wave pattern
Caliber	8800 Co-Axial Master Chronometer
Production	2018 to present

Recent recorded sales

Sold	Example	Price
Nov 3, 2026	Pre-owned · eBay sale ↗︎	$4,500
Oct 31, 2026	Pre-owned · eBay sale ↗︎	$4,350
Oct 30, 2026	Pre-owned · eBay sale ↗︎	$4,000
Oct 28, 2026	Pre-owned · eBay sale ↗︎	$4,050
Oct 14, 2026	Pre-owned · eBay sale ↗︎	$4,650
Oct 12, 2026	Pre-owned · eBay sale ↗︎	$4,450

Recorded eBay completed sales, logged at our last data refresh.

If you like this one

Seamaster Diver 300M210.30.42.20.01.001 · Grade B No Time To Die210.90.42.20.01.001 · Grade B Bond2531.80 · Grade B Black Wave2254.50 · Grade B

See the Blue Wave in the Vault Browse all references

Quick answers

How much is a Omega Seamaster Diver 300M 210.30.42.20.03.001 worth?

Recorded eBay sales from the last 12 months put the typical Omega Seamaster Diver 300M 210.30.42.20.03.001 at $4,400, with the middle half selling between $4,200 and $4,700 (139 sales). Condition, box and papers move the price within that range.

Does the Omega Seamaster Diver 300M 210.30.42.20.03.001 sell above retail?

No. The typical sale of $4,400 is about 34% below the $6,700 retail price.

Is the Omega Seamaster Diver 300M 210.30.42.20.03.001 a good investment?

The Crown Index grades it B+ (77/100) from real resale data, and today's call is hold. Solid resale, with limited room to grow from today's price. Past prices are not a forecast.