Fine silver and plated ware should be kept polished by the daily careful washing, rinsing in hot water. Silver will spot and tarnish. Use whiting and alcohol, let it dry on, and rub off with a clean cloth or chamois.
The silver powders sold at the silversmith's are very good, but the patent powders and liquids should not be used, as they remove too much of the silver.
Brass and copper are polished with rotten stone and oil. If the metal is spotted, use oxalic acid solution with the rotten stone. After rubbing well, the metal should be washed off in hot soap suds and finished with a dry cloth.
Nickel plate keeps bright if kept clean by daily dry rubbing.