An utterly unique Australian legal tender issue, united with an official Australia Post stamp set on the superbly illustrated envelope, the 25mm flan of this coin carries a striking portrayal of the invincible mare at full sprint. The compulsory complement to the full-colour Black Caviar $1, and a must-have for those desperate to preserve a complete $1 commemorative collection, this important coin is not to be issued for circulation and will never be found in change.