



Seamaster Aqua Terra 150M Co-Axial 30 White Gold / Diamond / Diamond / Bracelet
REF. 231.55.30.20.99.002
1/10
Widely producedCase
Dial
Movement
In Context
At 30 mm it is small by current standards, in the range most wristwatches occupied before cases began growing through the 1990s. The case back is open, so the movement is visible without taking the watch apart, and the sapphire crystal will resist everything short of deliberate abuse. 150 m is genuine swimming resistance — more than the shape of this watch suggests it would need.
231.55.30.20.99.002 stands on its own in this catalogue — no other reference here shares its base number. It carries a paved dial.
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