Both sides shown. 25mm. Gilt metal. Empire Day  celebrations were held  from 1905 to 1958 about 24th May ie Queen Victoria's birthday. Commonly called Cracker Night. Named changed to Commonwealth Day in 1958. Auction in AU$. Post FREE within Australia, $25 post outside Australia(no extra post charge for multiple small purchases). MANY MORE AUSTRALIANA BADGES IN MY EBAY STORE