Coins of the pound sterling also became known as a "pound". (240 actual pennies, however, weighed only 5400 troy grains, known as tower pound, a unit used only by mints. The tower pound was abolished in the 16th century.) The silver penny remained the primary unit of coinage for about 500 years. The purity of 92.5% silver (i.e., sterling silver) was instituted by Henry II in 1158 with the "Tealby Penny" — a hammered coin. Over the years, the penny was gradually debased until by the 16th century it contained about a third the silver content of a proper troy 24 grain pennyweight. By 1915,
Troy, New York other decorative stained-glass treatments for their customers in Troy. With many examples of intact 19th-century architecture, particularly in its Central Troy Historic District, this has helped to lure several major movies to film in Troy, including "Ironweed", "The Age of Innocence (Filmed partially in the Paine mansion)", "Scent of a Woman", "The Bostonians", "The Emperor's Club", and "The Time Machine." There are many buildings in a state of disrepair, but community groups and investors are restoring many of them. Troy's downtown historic landmarks include Frear's Troy Cash Bazaar, constructed on a steel infrastructure clad in ornately carved white marble; the