Final prices in dollars per ton - cash and forward. Also given are the previous trading day's quotations, according to dpa. # cash forward Copper 6,312.00 ( 6,237.00) 6,315.00 ( 6,235.00) Lead 1,925.50 ( 1,848.50) 1,946.50 ( 1,871.00) Zinc 1,809.50 ( 1,820.50) 1,837.50 ( 1,847.50) Tin 14,600.00 (14,650.00) 14,175.00 (14,175.00) Aluminium 1,715.00 ( 1,725.00) 1,745.00 ( 1,755.00) Nickel 19,297.50 (19,340.00) 19,287.50 (19,350.00) #