Combining Australia’s national gemstone, with the Chinese Lunar Calendar, AND precious metal, The Perth Mint’s Black Opal lunar series is extra special. In 2020, The Perth Mint’s Australian Lunar Coin Series begins again, with the first sign, the Year of the Mouse. Though it may be a new series, with all new coins, the ongoing Black Opal coin is back again for 2020 and, as per usual, its likely headed for a sellout! A tremendously popular coin from a tremendously popular series, each black opal Lunar Mouse is struck from 1oz of 99.99% pure silver to perfect proof quality. At its core, each proof coin also features a piece of Australian Black Opal carefully crafted in the shape of a Mouse! Set in a case with numbered certificate of authenticity.