Copper and Pewter

Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color

Pewter is one of the oldest known alloys, dating back to the Bronze Age. Fine pewter is a tin-based alloy consisting of at least 90% tin and the other 10% is some combination of silver, copper, bismuth, and antimony or more tin.