This coin is a two piece set of a gold coin with a detachable silver inset of the World Trade Center complex and claims to contain "15 mg. of 24 KT gold and 15 mg. of .999 Pure silver clad," and also continued to claim that the silver was found in a bank vault buried under the rubble of Ground Zero. For comparison, a U.S. dollar coin is 8.1 g and a dime is 2.268 g, meaning that the precious metal content of the commemorative coin is likely between 0.4% and 1.3% of the total mass.