Queensland State Archives posted a photo:
Custard apples are a decadent and deliciously sweet-tropical fruit. The Australian custard apple is a hyrbid of the sugar apple (Annona squamosa) and the cherimoya (Annona cherimola), and is unique to any other custard apples grown around the world. Originally native to South America, this luscious and flavoursome fruit has Australia as its largest commercial producer.
There are four main custard apple growing regions, all found on the east coast of Australia. These regions stretch from the Atherton Tablelands in tropical north Queensland down to Lismore sub-tropical NSW, allowing for a great supply of quality and delicious fruit throughout the season.
Tropical North Queensland kicks off the custard apple season, with the first fruit of the year ripe for the picking in late January/early February, followed by Yeppoon in Central Queensland. The season then follows the coast down to the Wide Bay area, and the Sunshine Coast