The Heroes of the Sky - Centenary of the Royal Australian Air Force 2021 $1 Mintmark & Privy Mark Uncirculated Coin Set contains four versions of the same collector $1 coin, each with a different mint mark or privy mark - C, B, M or S respectively for Canberra (mint mark) and privy marks for Brisbane, Melbourne and Sydney.
The coin commemorates the 100th anniversary of the Royal Australian Air Force (RAAF).
The packaging features an Australian pilot about whom the RAM says:
"In WWII, Len Waters enlisted in the RAAF on 24 August 1942. Training first as a flight mechanic, he was later accepted for pilot training. Posted to 78 Squadron RAAF, he served in the South-West Pacific Area in 1944-45, first at Noemfoor and then Morotai and Tarakan in what is now Indonesia. Flying a Kittyhawk P-40N fighter serendipitously named Black Magic, he made 41 strike missions against fortified Japanese positions, and another 54 operational flights."