Thank you for this great report. I know have some new knowledge I did not have 15 minutes ago. I love the subtle information you can discover hidden behind every Rolex.
You alsways think that vintage Rolex has the history... But the Sea-Dweller is vintage the R serial is +/- 1986 - 1987 so 25 years to be classified as vintage 2012 maker the first R serial vintage.
Thank you ¢hris and Pierre ESE 2A for sharing this knowledge with us.
Bill