Final prices in dollars per ton - cash and forward, according to dpa. Also given are the previous trading day's quotations. cash forward Copper 4,174.50 ( 4,101.50) 3,984.50 ( 3,927.50) Lead 1,031.00 ( 1,014.00) 979.00 ( 974.00) Zinc SH 1,526.50 ( 1,503.50) 1,523.50 ( 1,506.50) Tin 6,317.50 ( 6,377.50) 6,312.50 ( 6,372.50) Aluminium HG 1,630.00 ( 1,630.00) 1,660.00 ( 1,660.00) Nickel 11,997.50 (12,105.00) 12,012.50 (12,125.00) # (HG = Highgrade)