@es0mhi i use little metal polisher/shine paste for metal only (with no printed letters and dials) and normal car liquid silicon (the one for the car panel with a soft cotton cloth). And i use contact cleaner/anti rust spray for knobs contacts. It is the same as the video. I'm not an expert of restoration either, just tried to clean it up a bit and make her pretty again. It is a great radio. Then the paint job i used synthetic matte black paint with no solvent and a small brush and plenty of patience. Thanks for passing by!