Best Vintage Rolex Submariner Date for everyday use

[topcat30093]

For several months now I have been looking to get a vintage Submariner Date. One that can be used for everyday, including swimming.
It would be great to have the amazing patina that the vintage models have acquired.

Initially and to a degree I would have gone for a 1680.
But research has suggested that using a watch that is 50 years old may not be the best model, for reasons of water resistant.
Though, I do wonder whether either a service dial, or a 1680 which regularly has its seals checked, may work?

Otherwise my other choices are the 16800, 168000 or 16610.
Which may or mayn't have acquired some patina.

I am seeking advice from the members regarding this subject.
Both pros & cons.

Of course photos are most welcome.

I am not considering a modern piece. And have since tried on the new 41mm Sub. But found it to be to large.
Thank you for any suggestions and advice.