Information about legend: HER MAJESTY QUEEN ELIZABETH II · TDC

This legend is shown on commemorative coinage of the island of Tristan da Cunha, which is a constituent part of the British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha.

The head of state, as for all overseas territories, is the British monarch. The Queen's role in the territories was in her role as Queen of the United Kingdom, and not in right of each territory separately.