Kellogg Wood Wall Phone

[wds]

I picked this up today for $75 from an Ebayer than happened to live a couple miles from my house so I saved the shipping, and any potential damage from the shipping.  The phone seems to be completely original, and none of the wiring has been cut or replaced.  The only thing missing are the two batteries, and the shelf on the front.  If I can't find the shelf anywhere, then I'll make one as close to the original as I can.  I don't think I want to strip the finish off - just clean and polish.  Any suggestions for the cleaning process?