I do what I can to save the model number and other chassis stamps, but sometimes the factory graffiti is unavoidably or accidentally obliterated. If you don't mind cheating, here's a way to restore the original appearance:
https://picasaweb.google.com/coldrb/...eat=directlink
Brasso makes a more convenient product for delicate work. They sell a can of Brasso-impregnated soft cotton. I've only seen this on military bases, but it's great for small areas.
- Winky