Final prices in dollars per ton - cash and forward. Also given are the previous trading day's quotations, according to dpa. cash forward Copper 7,787.50 (7,927.50) 7,817.50 (7,957.50) Lead 2,338.50 (2,324.50) 2,362.50 (2,347.50) Zinc 2,462.50 (2,455.50) 2,492.50 (2,487.50) Tin 19,162.50 (18,915.00) 19,237.50 (18,990.00) Aluminium 2,275.00 (2,280.00) 2,300.00 (2,310.00) Nickel 26,715.00 (27,095.00) 26,775.00 (27,150.00)