This postal numismatic cover marks the festivities of Aussie Big Things during Collecting Month 2023, prominently presenting the Big Lobster $1 coin.

A tribute to an iconic Australian Cattle Dog variety, the Big Blue Heeler statue takes its place as a commemorative piece. This breed, thought to have its roots in the 1840s within Muswellbrook—an urban center nestled in the Upper Hunter region of New South Wales—was initially developed by cattle ranchers through the interbreeding of the dingo and the Northumberland Blue Merle. Renowned as a diligent working dog, this breed adeptly manages high temperatures while displaying a calm and agile herding prowess amidst cattle.