This ornate (and extremely heavy) stamp was used to mark documents produced by the Egmont Park Board with its distinctive mountain seal. The Egmont National Park Board was set up in the 1920s to manage the use of the park for recreation and tourist purposes. After the National Parks Act was developed in 1952, the Egmont National Park Board came under more central guidance through the National Park Authority, alongside the Department of Lands and Survey. Park rangers were introduced through the Department of Lands and Survey, and the function of Egmont National Park shifted from a predominantly recreational space, to an area that also focused on the preservation of native plants and animals.

However, the changing nature of government departments meant the National Parks Authority and the park boards, including Egmont National Park Boards, were abolished. This saw the end of this stamp's career, as the newly developed Department of Conservation took over the management of Egmont National Park.