Cleaning Chrome?

[Eidetic]

I have come across a c1963 Spectra-Physics model 112 He-Ne laser head, an ultra-rare supernugget for the collection. It has a very elaborate tilting mechanism for the front mirror that was chromed steel, but now has a green corrosion all over. The rest of the head cleaned up nicely. I used brass wool on the RF antenna rods and it took the green off very well, but this tilter is too detailed for that to work easily. I'm hoping for a chemical solution (pun intended). Does anyone here have experience cleaning such corrosion off chrome? I read it's probably copper coming up from under the chrome, and that acids may work. I've read about oxalic acid being used. Any help will be appreciated. I really don't want to just leave it.

[kecked]

First scrub it with a toothbrush loaded with baking soda water paste. This will remove the corrosion on the surface and neutralize the copper sulfate/carbonate which is the green stuff. Next dip it in vinegar to remove the soda and soft clean the metal surface (makes acetates which are soluble in water.) Keep an eye on the process as it will eat into the pits. Now the metal is clean and the corrosion pits cleaned out of junk. Next hit it with Mothers Mag Wheel polish and rub until the shine comes back. You will now have a nice polished chrome piece. Any damage will show. Next decide to repair the pits or keep it as is. Repairing the pits means sending it out to be re-plated. Spot repair plating will show worse than the pit.

[Phredy1]

A couple of baths in CLR or soak overnight in Coca Cola. Either should work ok.