Final prices in dollars per ton - cash and forward, Also given are the previous trading day's quotations, according to dpa. # cash forward Copper 5,120.00 ( 4,956.00) 5,135.00 ( 4,972.50) Lead 1,728.00 ( 1,663.50) 1,747.50 ( 1,677.50) Zinc 1,565.50 ( 1,497.50) 1,592.00 ( 1,524.00) Tin 14,755.00 (14,420.00) 14,675.00 (14,350.00) Aluminium 1,420.00 ( 1,370.00) 1,445.00 ( 1,395.00) Nickel 16,295.00 (15,195.00) 16,375.00 (15,275.00)