Have a just gotten a rather nice Casio Waveceptor watch, but it appears that
the previous owner was careless and the face of the watch (and stainless
steel band) is a bit scratched. Tapping it, feels quite hard, so I'm
guessing glass, but probably mineral glass and not sapphire, as thats quite
scratch resistant.

Anyone got any idea on whether this can be polished with a Dremel? Read some
web forums that say that watch glasses often have a special antireflective
coating - and I'm guessing this would be removed.