There is no official U.S. Mint product matching this description. In 1986, the Mint issued a Statue of Liberty centennial commemorative in three denominations: a copper-nickel clad half dollar, a silver dollar (0.7734 troy oz), and a $5 gold coin (0.2419 troy oz). None were 1 troy pound (12 troy ounces). Private mints have produced large silver rounds with Liberty/Ellis Island themes, but these are not legal tender and carry only bullion value. Always verify authenticity with a reputable dealer.