Andrewausfa shows his restored radio on youtube with tips on how to get excellent results.

Greygate Brass & Copper Polish is an equivalent to Brasso which is used first to clean off the grime.
Greygate Paste Polishing No.5 is then used to give the good shine
he then finishes off with a standard beeswax furniture polish which the Greygate cabinet makers wax would be an equivalent off or the Greygate Carnauba Wax would also give good protection and shine.