I have a seamaster 300 (2531.80.00), which I was told had been serviced by omega when I bought it. I'm curious go find out whether there is any way of checking whether they have serviced it, and is there's way of getting hold of the service details so I know what was replaced?
Only way would be to ask the seller to send any service info they have. You'd need to have the service number for a Service Center to look it up (and you'd need to know which one).