 Two years later, the island participated in the omnibus issue for the 50th anniversary of the Australian and New Zealand Army Corps landing in Gallipoli during World War I.These two issues bore the designation "CHRISTMAS ISLAND" without any reference to Australia like the new cancelling datestamps on which the "AUST" abbreviation disappeared.Nonetheless, on 6 May 1968, the monetary and postal systems of Christmas Island were brought closer to the Australian ones