Caseback Terminal

Omega Seamaster Diver 300M 210.30.42.20.01.001 vs Omega Speedmaster Professional 311.30.42.30.01.005

Which is the better buy? What each sells for, how it holds up against retail, how many are for sale and how they move.

OmegaSeamaster Diver 300M210.30.42.20.01.001 · Black$4,450OmegaSpeedmaster Professional311.30.42.30.01.005 · Moonwatch, Cal. 1861$4,750

In short

The 210.30.42.20.01.001 sells for $300 less than the 311.30.42.30.01.005 ($4,450 against $4,750), 6% less, as a full set in excellent condition.

Against US retail, the 210.30.42.20.01.001 sells 34% under retail and the 311.30.42.30.01.005 11% under retail.

Side by side

Measure210.30.42.20.01.001311.30.42.30.01.005
Market value$4,450$4,750
Typical range$4,200 – $4,700$4,450 – $5,050
Unworn$4,750$5,100
Without box & papers$4,000$4,300
US retail$6,700$5,350 last retail (2021)
vs retail−34%−11%
Today——
For sale now——
Sales, 30 days——
Auctions that sold——
Case42mm42mm
MovementCal. 8800Cal. 1861
ProductionCurrentDiscontinued 2021

Values are full set, excellent condition unless the row says otherwise, from real eBay sales and live listings.

How they've moved

The chart of how they move against each other fills in as the days go by.

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