Claude
The front of this light green envelope features a colorful cachet illustrating a cartoon koala (Blinky Bill) dressed in red overalls, reading an ABC book to three surrounding rabbits, with the title 'Australiana: Classic Children's Books' printed above. The single 33-cent Australian stamp depicts Blinky Bill as a koala character with the title 'Blinky Bill' in red text. The pictorial postmark is circular and features an illustration of a boy in overalls and a cap, dated 17 July 1985, from Sydney 2000, New South Wales. The reverse provides biographical notes about creator Dorothy Wall, with stamp design credited to Peter Leuver and cover design to Sue Titcher of Australia Post Graphic Design Studio.
Mistral
The cachet features Blinky Bill, a cheerful koala in red overalls, reading an 'ABC' book to three attentive rabbits in an outdoor setting. The stamp depicts Blinky Bill in a playful pose with the text 'Blinky Bill' and 'Australia 33c'. The circular pictorial postmark shows a boy in overalls and cap, with the text 'Sydney 2000' and 'New South Wales'. The cover is in excellent condition with clear artwork and postmark details.
(The automatic summaries sometimes misidentify the postmark as part of the cachet artwork.)