TimeFlip
Omega

Seamaster Diver 300M Blue

210.30.42.20.03.001201842Stainless SteelWave-pattern
Grey market range$6,150
$5,900$6,400

MSRP $6,200 — grey market -1%

eBay asking prices

eBay asking range$4,997
$4,697$6,000

48 active listings · as of 2026-08-02

What's your watch worth?

Adjust condition and completeness to estimate this specific watch's value.

Condition
Estimated value$6,720Estimated range $6,317$7,123
  • Excellent — full-set baseline
  • Discontinued+5%

Estimate based on your inputs — not a formal appraisal.

Market References

Retail (MSRP)
$6,200
Grey market avg
$6,150Avg Price
eBay asking
48 active listings
$4,997Avg Price
Case42 · Stainless Steel
DialBlue · Wave-pattern
BezelBlue Ceramic · Unidirectional
BraceletSteel · Steel Bracelet
Production2018
Condition basisUsed
Rarity3
LiquidityHigh

Variant guide

Also available on a rubber strap or blue NATO for a lower entry price.

Buyer's guide

Skeletonized hands and a helium escape valve add tool-watch credibility at a mid-range price point.

Seller's guide

Bracelet versions resell faster than strap versions; mention bracelet inclusion explicitly if present.

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