If your iron keepsakes include old wagons or farm machinery, etc., which were traditionally painted, rust-inhibiting paints may be used. Determine first the original color and design and whether painting will affect the antique value of the item. If the item can be protected without the addition of paint, the item may be best left alone. Tin Tin, because it is not as sensitive to moisture and corrosion, is used as a coating for other metals to prevent rusting. 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.