Omega Seamaster Polaris Chronograph Ref. 378.0885 - Serial N

Yu7 · 2026-11-09T02:14:23-0600

Hello everyone,

I recently acquired an Omega Seamaster Polaris Chronograph, reference TB 378.0885.

The serial numbers are:

Case: 50001xxx
Movement: 50003xxx

I would appreciate your opinions on two points:

Q1.Is this combination of case and movement serial numbers plausible for this reference?

Q2.Does the movement in the attached photos appear to be a genuine Omega Calibre 1154?

Any insights would be greatly appreciated.

Archer · 2026-11-09T08:40:46-0600

The 1154 came in both "yellow" and rhodium versions.

I would expect that the serial numbers on the case and movement should be the same, so it's possible the movement was swapped at some stage.