I would like to ask what type of Omega watch this is, what is the serial number and the price? What action did he use?

Hippocampus series, 8500 coaxial escapement movement, certified by the Observatory.

Watch number: 231.10.39.21.03.005438+0.

The hand price is about 28,000 (between 27,500 and 29,800). You can find overseas purchasing shops online by yourself. Just search the watch number directly on TB.

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Sorry, I seem to have read the dial by mistake.

Model correction of movement: Omega 2500, not the movement of AT8500 mentioned above. This is cheaper, ranging from 12000 to 17000.

Please refer to 2502.34, 2504.50, etc. (different dial colors, same movement) for specific watch models.