I have the old seamaster professional 300m, I don't have the papers now, I can only found the serial numbers engraved ever so tiny on the bottom right corner of the case (behind the 7 o clock position), it is 80682478. It was very small, I need magnifying glass to see it. I forgot what year this watch was bought and produced because if i am not mistaken it was from early 2000 (around 2004) but when I search for info in the other forums, 80000000 serial numbers correspond to production date about 2006 -2007
If anybody have the knowledge about this serial number, and share this, would be greatly appreciated
Best regards
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