This watch would probably benefit from a bit of a polish. Maybe check it with a Geiger counter too. https://www.the-saleroom.com/en-gb/...aign=auction-alert&utm_content=lot-image-link
Yes, it can be polished and restored. But only if your watchmaker is willing to wear this. Available at Amazon. No guarantee it will protect you from the radiation though...
The words wabi sabi, mung, nor patina really describe this. How might an imaginative eBay seller describe it? Light encrustation? Historic artifact?
Too bad the hands are no longer intact. Not sure if there could be anything on the post that would indicate where the hands were when it stopped working.