I failed with white spirit etc. Then had the idea of Auto glym. It is a metal
polish, more user freidnly than Brasso as it comes in a tube, with a consistency
like toothpaste. I used that , plus a sprinkling of Barkeepers friend. I rubbed
it with a green washing up type ccouring pad. It worked, but yes, a bit of
effort required. Then a cup of tea. Or gin.