1966 Birthday. 1966 Irish Threepence cufflinks. These unique cufflinks are made from genuine year 1966 Irish threepence, the coins feature the Irish Hare – a recognized symbol in Irish folklore and mythology – as well as the Celtic harp symbolizing the history, culture and heritage of the Emerald isle. They are made by hand not machine and they come in a beautiful silver presentation box. You are covered with our 100% satisfaction guarantee on all our products.