Fifty Cents 2022 Australian Signals Directorate, Coin from Australia - detailed information

The obverse of the coin depicts the crowned old bust of Queen Elizabeth II facing right, wearing the Royal Diamond Diadem crown worn for her Coronation (effigy known as the "Fifth Portrait" worldwide but "Sixth Portrait" in Australia, where the Queen's portrait by Vladimir Gottwald was fifth).

The Queen also wears the Coronation Necklace; originally made for Queen Victoria in 1858, it was also worn at the coronations (as Queen's Consort) of Queen Alexandra in 1902, Queen Mary in 1911 and Queen Elizabeth (the Queen mother) in 1937.

Unlike on British coinage, the effigy is "uncouped" (includes the Queen's shoulders). In small letters on the left, the artist's initials JC (for Jody Clark).

Running continuously around the rim is the monarch's legend, the date of issue and the face value: ELIZABETH II · AUSTRALIA 2022 · 50 CENTS ·.

The centre of the reverse is divided into three equal sectors by lines starting from the centre.

Above left, a large numeral 75, to the right of which on three lines the inscription AUSTRALIAN SIGNALS DIRECTORATE.

On the left, parallel to the long line in the number 7, the anniversary years 1947 - 2022; curved around the lower part of the number 5, REVEAL AND PROTECT.

The lower right sector is filled with hexadecimal symbols; around the rim, two lines of capital letters, the outer of which is uninterrupted and the inner interrupted by six graphic symbols. All of this constitutes a code which can be cracked to reveal a secret message.

Finish: Brilliant Uncirculated.
Packaging: in blister card.
RAM Product Code: 10893.
Date of issue: 1 September 2022.
Issue price: AU$ 12.50