Well, since my interest on watches sits on the opportunity to WEAR a
beautiful, rare, eye-catching time-piece with some history behind it and,
obviously, 100% functional, I'm pro discrete and adequate restoring procedures.
I consider luminiscence an important functionality for "tool watches".
Of course, this is not always valid for collectors or investors - for whom
there are many variables influencing the decision of to restore or not to
restore...
In the Brietling shown below, fortunatelly, it was not necessary to relume the numerals, so I've decided to only clean them up - the same with hands - and polish the plexi for better read. Note that I decided not to re-paint the bezel, since it wouldn't add any functionality and would be certainly a noticeable retouching.

Of couse, there are risks on restoring a watch. Sometimes we just can't get a perfect work. Check the Carrera shown bellow. I had to get the hands refilled (and I think it is well done, indeed, mainly the color match). However, I didn't get the same result for the lume dots. Some of them are not perfect, and some of them just fell down after a couple of days...

Thanks guys!