Patina is a great word for it, Mike.
I'd like to say: "but it must be earned -- genuinely, with a life fully lived, and authentically, with the long passage of time".
But from what I can tell, that's not actually true.
We have, it seems from photos, some masters about who (logically, technically) know their crafts so well that (emotionally, spiritually) they can create brand new courses permeated with the feeling of a 400 year old beech tree, standing sentinel by a swift running stream in the English Cotswolds.
P