The main symbol of the monarchy is the sovereign herself—her portrait, for instance, appears on all coins, the twenty-dollar banknote, and postage stamps such as the Queen Elizabeth II definitive stamp. There are references to St Edward's Crown, on New Zealand's coat of arms, on various medals, and awards. These latter cases reflect the monarch's place as the formal head of the New Zealand royal honours system. As such, only she can approve the creation of an honour, which she does as requested by the New Zealand Government. Though the monarch themselves formally appoints members to the various orders, the governor-general administers most other responsibilities relating to New Zealand honours on the sovereign's behalf (such as investitures).