Final prices in dollars per ton - cash and forward. Also given are the previous trading day's quotations, according to dpa. # cash forward Copper 7,357.00 ( 7,207.50) 7,375.00 ( 7,227.50) Lead 2,728.50 ( 2,568.75) 2,739.50 ( 2,597.50) Zinc 2,367.00 ( 2,349.00) 2,380.00 ( 2,357.50) Tin 16,262.50 (16,250.00) 16,437.50 (16,400.00) Aluminium 2,315.00 ( 2,290.00) 2,350.00 ( 2,325.00) Nickel 28,850.00 (28,037.50) 29,125.00 (28,312.50)