I am offering a 2015 Australia 1/2 oz pure Silver (.999) coin minted in Perth to commemorate The Battle of the Coral Sea fought between Imperial Japan and the US & Australian Naval & Air Forces on 4-8 May 1942 or about 5 months after Pearl Harbor.  It is 32mm in size and contains 14.175 grams of pure silver (1/2) ounce.  It is a very nice commemorative bullion coin.  Thanks for your interest and I ship fast.