Somtimes Duraglit (brasso in a wadding) will make it look better ,but a more long term cure is to mask of the face and repaint with a rattle can .Preparation is a bit fiddly and finding a suitable off white can be a pain.Just a quick pass with the can is all you need otherwise the gloss builds up and you loose the definition of the needle.I found it easier to scrape off the paint from the rivet bit in the middle.
Mike.