Purchased at a local jeweller, he had little info to share, so am trying to ascertain the year model etc. After reading various posts on this site, (thanks to all) I have a better idea, but as a novice I am not certain. I have not had the back taken off to view the movement info. This is my first foray into vintage watches as I have always gone for the newer style. As the Rolex Sub is my favourite watch, I could not resist its cousin. Is it recommended to have a Rolex AD service these Tudor watches ? Appreciate any thoughts.

