Fourth crowned portrait of HM Queen Elizabeth II facing right, wearing the Girls of Great Britain and Ireland tiara.

The Girls of Great Britain and Ireland tiara was a wedding present in 1947 from her grandmother, Queen Mary, who received it as a gift from the Girls of Great Britain and Ireland in 1893 on the occasion of her marriage to the Duke of York, later George V. Made by E. Wolfe & Co., it was purchased from Garrard & Co. by a committee organised by Lady Eve Greville. In 1914, Mary adapted the tiara to take 13 diamonds in place of the large oriental pearls surmounting the tiara. At first, Elizabeth wore the tiara without its base and pearls but the base was reattached in 1969. The Girls of Great Britain and Ireland Tiara is one of Elizabeth's most recognisable pieces of jewellery due to its widespread use on British banknotes and coinage.

Engraver: Ian Rank-Broadley

Depicts a postman, facing left, wearing a helmet and riding a bike with a bag above the front wheel, two saddlebags and a flag on the rear of the bike. On one of the saddlebags, a stylised representation of the Australian Postal Corporation logo, which is in turn enclosed by a square. There are 11 thin concave lines with identical curvatures and 3 thick convex lines with identical curvatures.

The Australian Postal Corporation (formerly the Australian Postal Commission), operating as Australia Post (also known as AusPost), is the government-owned corporation that provides postal services in Australia. The 200th anniversary of postal services was celebrated in 2009.

One in five of the tubed set "A" coins has an exclusive privy mark of an envelope.

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