"Anna Kettle" wrote in message
...

The National Trust use stuff called Renaissance wax which is available
in the internet from a couple of specialist suppliers. It stops the
tarnishing but doesnt chip or scratch like laquer. Just need to put
another coat of wax on each year

I'd forgotten about that! Our local hardware shop sells it, I might give it
a go - when I've got round to polishing all the brass in our house :-)
Thanks,

Mary