Final prices in dollars per ton - cash and forward, Also given are the previous trading day's quotations, according to dpa. cash forward Copper 7,670.00 ( 7,500.00) 7,645.00 ( 7,490.00) Lead 1,245.50 ( 1,216.50) 1,249.50 ( 1,216.50) Zinc 3,366.00 ( 3,351.00) 3,385.00 ( 3,365.00) Tin 8,857.50 ( 8,795.00) 8,912.50 ( 8,845.00) Aluminium HG 2,210.00 ( 2,180.00) 2,235.00 ( 2,205.00) Nickel 31,400.00 (31,800.00) 27,850.00 (27,650.00) (HG = High grade)