Fourth portrait of HM Queen Elizabeth II, when she was 77 years old, facing right and surrounded by the inscription. Date below.

Elizabeth II (Elizabeth Alexandra Mary; 1926–2022) was Queen of the United Kingdom and of 14 other Commonwealth realms. Her reign of 70 years and seven months, which began on 6 February 1952, was the longest of any British monarch in history.

When her father died in February 1952, Elizabeth—then 25 years old—became queen regnant of seven independent Commonwealth countries: the United Kingdom, Canada, Australia, New Zealand, South Africa, Pakistan, and Ceylon (Sri Lanka), as well as Head of the Commonwealth. Elizabeth reigned as a constitutional monarch through major political changes such as the Troubles in Northern Ireland, devolution in the United Kingdom, the decolonisation of Africa, and the United Kingdom's accession to the European Communities and withdrawal from the European Union. The number of her realms varied over time as territories have gained independence and some realms have become republics.

Times of personal significance have included the births and marriages of her children, grandchildren, and great grandchildren, her coronation in 1953 and the celebrations of her Silver, Golden, Diamond, and Platinum jubilees in 1977, 2002, 2012, and 2022, respectively.

Dei Gratia Regina (often abbreviated to D. G. Regina and seen as D·G·REGINA) is a Latin title meaning By the Grace of God, Queen.

Engraver: Susanna Blunt

Depicts a common loon, swimming on a lake, a maple leaf within a circle and country name above, facial value below.

The common loon or great northern diver (Gavia immer) is a large member of the loon, or diver, family of birds. Breeding adults have a plumage that includes a broad black head and neck with a greenish, purplish, or bluish sheen, blackish or blackish-grey upperparts, and pure white underparts except for some black on the undertail coverts and vent. Non-breeding adults are brownish with a dark neck and head marked with dark grey-brown. Their upperparts are dark brownish-grey with an unclear pattern of squares on the shoulders, and the underparts, lower face, chin, and throat are whitish. The sexes look alike, though males are significantly heavier than females. During the breeding season, loons live on lakes and other waterways in Canada; the northern United States (including Alaska); and southern parts of Greenland and Iceland.

The common loon is the provincial bird of Ontario, and it appears on Canadian currency, including the one-dollar "loonie" coin and a previous series of $20 bills. In 1961, it was designated the state bird of Minnesota and appears on the Minnesota State Quarter.

Engraver: Robert-Ralph Carmichael