Included in this set is a replica of the Naval Captain's Sash Badge belonging to the esteemed Matthew Flinders, along with a 20-page information booklet containing a numbered certificate of authenticity.

The reverse designs of the four coins beautifully depict:

• Duyfken: The Duyfken, a Dutch ship, is celebrated for its role in charting the Australian coastline in 1606. This small vessel made history as the first European ship to make recorded landfall on the Australian continent.

• HM Bark Endeavour: Commanded by the legendary Captain James Cook, the Endeavour embarked on its iconic voyage in 1768, leading to the first European encounter with the eastern coastline of Australia in 1770. This ship is immortalized for its contributions to exploration and scientific discovery.

• HMS Sirius: Serving as the flagship of the First Fleet, the HMS Sirius played a pivotal role in establishing the first European settlement in Australia in 1788. Its journey marked the beginning of a new era in Australian history.

• HMS Investigator: Commanded by Matthew Flinders, the Investigator was instrumental in the first circumnavigation of Australia from 1801 to 1803. Flinders' meticulous mapping and exploration laid the foundation for modern cartography of the continent.

Purity of 99.99%, weighs 145.24 grams, and has a net weight of 4.67 troy ounces.