Battle of the Atlantic 1939 - 1945 ( 5 X Silver and 1 x 24crt Gold) limited edition coins bought from the London Mint Office last year. The U Boat carrying the bullion was sunk by the Germans during WW2 and only just recently been recovered. Both gold and silver are 99.9% purety. The good coin is 24crt Gold. The presentation pack gives you the history behind the bullion. This collection will be an asset to whoever buys it.