I know on that auction site the really cleaned and beautiful ones do sell very high, they are shiny and look new as a new car, so I would think cleaning them up for that reason as well as for preventative treatment.
As Steve Mentioned the W and G isn't a rare machine, but is so darn cute. I want mine just to be a very nice machine and tidy, but not in "show condition" as I don't need one like that.
I would like to know what to use for a polish on some parts on other machines, is there a certain brand that I can obtain through a normal store that I can use? Thanks Janet for your kind words.