Legendary door panels are arriving!!!!!

After a 9month wait after payment ,and another year of waiting at classic industries for door panels for 1967 barracuda fastback ,,I’m realizing I’d like to spruce up my door handles before installation,,,I hav an amazing guy who could do the leather part but how can I clean up the rest of the metal part ?36443EC5-1012-404E-B0F8-76F4CDBA390F.png36443EC5-1012-404E-B0F8-76F4CDBA390F.png