The base or body of the key is a seven sided shield, the bevel of which carries on each side the initial of one of the great land masses of the earth. Beginning with Europe at the top, to the right is Asia, Africa and Australia, the great land masses of the Old or Eastern World. To the left on the key is North America, South America, and Antarctica, the three great land masses brought into geographical knowledge as man expanded westward from Europe, the so-called New World.