The Omega Seamaster 300M (reference 210.30.42.20.01.001) is a 42mm stainless steel with a automatic movement and 300m of water resistance. It carries a black dial. On the secondary market it typically trades between $3,961 and $6,200.
Confirmed secondary-market sales WristWorth has tracked for this reference.
Omega's story is one of firsts that matter. Official Olympic timekeeper since 1932. First watch on the Moon in 1969, strapped to Buzz Aldrin's wrist during Apollo 11. The Speedmaster survived NASA's brutal qualification tests — temperature extremes, vacuum, shock — where competitors failed. Today Omega balances heritage with technical innovation through co-axial escapements and Master Chronometer certification (tested by METAS for magnetic resistance up to 15,000 gauss). The brand sits in a sweet spot for collectors: serious horological credibility at roughly half the secondary market premium of Rolex, with room for appreciation in key references.
Aqua Terra 150M 38mm
220.10.38.20.01.001
Aqua Terra 150M 41mm
220.10.41.21.06.001
Aqua Terra 150M 41mm (Rubber)
220.12.41.21.01.001
Aqua Terra 38 Sunray Blue
220.10.38.20.03.001-2
Aqua Terra 38mm (Blue)
220.10.38.20.03.001
Aqua Terra Two-Tone
220.22.41.21.02.001

Constellation 27mm Diamond
127.10.27.20.55.001

Constellation 29mm Two-Tone
131.25.29.20.58.001
On the secondary market the Omega Seamaster 300M (reference 210.30.42.20.01.001) typically trades between $3,961 and $6,200, with a midpoint around $4,900. Actual prices vary with condition, box/papers, and demand.
The 210.30.42.20.01.001 runs a automatic movement, with roughly 55 hours of power reserve.
The 210.30.42.20.01.001 has a 42mm Stainless Steel case, water resistant to 300m, with a black dial.
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