http://www.coins-of-the-uk.co.uk/pics/metal.html#C coinage metals http://www.coins-of-the-uk.co.uk/pics/metal.html#Porc http://www.coins-of-the-uk.co.uk/pics/metal.html#Spec http://www.coins-of-the-uk.co.uk/pics/metal.html#W http://www.coins-of-the-uk.co.uk/pics/metal.html Metals Used in Coins and Medals - Crown Gold «Metals Used in Coins and Medals» http://www.coins-of-the-uk.co.uk/pics/metal.html Metals Used in Coins and Medals