"This certificate accompanies a coin celebrating the 400th anniversary of the first known sighting and charting of Australia's coast by a European explorer ... Towards the end of 1605, William Janszoon sailed from Bantam in Java, in search of trade opportunities on behalf of the dutch East India Company. The master of the small Dutch ship Duyfken (Little Dove) sailed south-east, charting part of the coast of Nova Guinea. By March 1606, the expedition had crossed the Arafura Sea, sighting what was asumed to be a southern extension of the island..." Certificate.