I may be mistaken but I...
I may be mistaken but I dont think they have ever been fully polished, I have pictures of the Saarinen / Girard house and they look to have a pretty dull finish,
If you did want to polish them up you could do it pretty easily with a polishing kit, the kit has different mops and compounds, you start with a pretty abrasive mop and coarse compound and build up to a soft mop and low abrasive compound eventually you will get a bright mirror finish, I have used a similar kit on aluminium engine parts in the past and if you are patient you can get a really great finish, here is the kit I bought here in the UK,
http://www.frost.co.uk/item_Detail.asp?
productID=8272&frostProductName=Heavy%20Duty%20Polishing%20And%
20Abrasive%20Kit&frostCat=Polishing&frostSubCat=&frostubCatID=
All you need is a drill or better still a bench grinder,
Once up to shine try and use a non abrasive cleaner I use Peek and rate it very highly
pete
http://www.peekpolish.com
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