Final prices in dollars per ton - cash and forward. Also given are the previous trading day's quotations, according to dpa. # cash forward Copper 6,788.50 ( 6,829.50) 6,820.50 ( 6,867.50) Lead 2,561.50 ( 2,633.50) 2,557.50 ( 2,622.50) Zinc SH 2,403.50 ( 2,431.50) 2,417.50 ( 2,447.50) Tin 16,332.50 (16,320.00) 16,437.50 (16,450.00) Aluminium 2,285.00 ( 2,290.00) 2,315.00 ( 2,320.00) Nickel 26,195.00 (26,985.00) 26,500.00 (27,300.00)