Ernest, heaven forbid that you should change the dial.. Have the dial cleaned, when you next have the movement oiled and serviced. That's all you need to do. Just like shoes, the dials look better with the vintage patina. Plus, antique watches lose a lot of their value if any of the important parts (crown, dial, movement) are not original.
Yes, old watches should be allowed to wear then age with grace and not try to look new. Their character is their charm, otherwise, get a brank spanking new watch.