Brasso works well, also, but requires some buffing.

Hockeyguy wrote:

Hello to the NG,
I have some old Eico gear & would like to clean up the copper chassis a
bit. There is black lettering on the chassis also. I'd like to clean up
the copper without taking the lettering off! Does anyone know what I could
use on the copper chassis without harming the lettering???

Thanks,
Steve K2FW