 In 1990 and 1993, the UK replaced these coins with smaller versions, as did New Zealand in 2006 – at the same time discontinuing the five-cent coin.With a mass of and a diameter of , the Australian 50-cent coin is one of the largest coins used in the world today.In circulation, the old New Zealand 5-, 10- and 20-cent coins were often mistaken for Australian coins of the same value, owing to their identical size and shape.