Cleaning TT Platter?

[desert_burner]

Hello guys,

I have an old TT that I am trying to neaten up and the one thing I cannot seem to clean properly is the platter. Any suggestions on how to get the oxidation marks off of what looks like an aluminium or similar silverish metal?

Many thanks.

 

[vintage]

 

[MusicMan_ZA]

 

[alternativeroute]

 

[desert_burner]

 

[alternativeroute]

 

[desert_burner]

 

[MusicMan_ZA]

 

[alternativeroute]

 

[MusicMan_ZA]

 

[OgreZA]

 

[OgreZA]