[sc_rufctr]

It can be polished although you could also get it re-plated gold which would look better IMO.

I haven't seen a stick on option for the date issues but a good watch smith may be able to replace the glass with one with a magnifying lens over the date.
The problem will be getting the right size. Hopefully there is something available off the shelf. Getting one custom cut would be expensive.

And yes it would benefit from a cleaning at the same time but as they get older these electronic/mechanical watches can be easily damaged when cleaning.

Do you know a good watch smith?

One of the members here is a jeweler.