vinegar and salt should make quick work of it... neutralize with
baking soda or just rinse really well.

Another excellent tarnish-remover for copper, brass, and silver can be
made from baking soda and ammonia water, both available from any
decent supermarket. Takes off the tarnished surface almost instantly,
leaving clean bare metal, and rinses clean with water.

--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!