Until i discovered Cluster of Clues... while others were looking for The Truth!
Here, in this Flickr album, i gathered very similar adverts (yes, they are all different).
They date from 14.07.1966 to 03.11.1983.
(Click on the picture to be relinked to the Album)
What happened after 1983 in Australia after Giordano Robbiati stopped manufacturing these machines?