Final prices in dollars per ton - cash and forward. Also given are the previous trading day's quotations, according to dpa. # cash forward Copper 6,237.00 ( 6,038.00) 6,235.00 ( 6,036.00) Lead 1,848.50 ( 1,794.50) 1,871.00 ( 1,817.50) Zinc 1,820.50 ( 1,775.50) 1,847.50 ( 1,802.50) Tin 14,650.00 (14,350.00) 14,175.00 (13,850.00) Aluminium 1,725.00 ( 1,715.00) 1,755.00 ( 1,745.00) Nickel 19,340.00 (18,880.00) 19,350.00 (18,900.00) #