The rust normally seen on tin items is usually the result of the wearing away of the tin layer and the exposure of the iron which rusts. Tin is stable but soft. Use fine polishes such as a silver polish to brighten tin objects, if desired. Heavy and regular polishing can wear away the tin coating. Pewter Pewter is an alloy usually made of tin, copper and other metals and is relatively fragile.
Heat can damage pewter items.
Store pewter items in a stable environment with a humidity level of 40 to 50 percent. Use of materials that contain sulphur such as some adhesives and felt should be avoided near pewter storage. Wrap pewter items in acid-free tissue and store in polyethylene bags. Pewter will retain its luster for two years or longer if sulfur and moisture are not excessive. Whether or not to remove the patina is an individual decision.