2016 $1 Fine Silver Proof Coin, Kangaroo Series ' Seasons Change'. Since 1993, the Royal Australian Mint's annual Kangaroo Series has celebrated Australia's most iconic animal, the kangaroo. Continuing with tradition, the new theme for the popular series, Seasons Change, captures the life cycle of this uniquely Australian animal as the seasons change, in its natural Australian habitat. Mintage 5000. Certificate of Authenticity is included.