According to tradition, when soldier and pastoralist James Brumby was transferred from Sydney to Van Diemen's Land in 1801, he was forced to release several horses into the bush. Known as Brumby's horses and later as 'brumbies', the word came to mean wild horses.

Mobs of brumbies that most famously roam the Australian Alps today are descended from lost, abandoned or escaped horses that in many cases belonged to early British settlers like Brumby.

The coin's reverse portrays a brumby galloping in an arid, barren landscape with spectacular forked lightning in a foreboding sky. The design includes the inscription 'AUSTRALIAN BRUMBY', the coin's weight, fineness, 2025 year-date, and The Perth Mint's 'P' mintmark.

The coin is housed in a classic display case with a black lid. Packaged within an illustrated shipper, each coin is accompanied by a numbered Certificate of Authenticity.