2017 $1 Australia's First Fighter Aircraft CAC Boomerang 1oz Silver Proof CoinThe CAC Boomerang, Australia's first indigenous fighter aircraft, was developed during World War II by the Commonwealth Aircraft Corporation. Introduced in 1942, it featured robust design, exceptional manoeuvrability, and was primarily used for reconnaissance and ground attack missions. Despite its limited speed and firepower compared to contemporaries, the Boomerang played a crucial role in Australia's defense and showcased domestic aviation