Referring to my post from the 30th October, Carol has shared with me apictures of similar ‘ceramic’ buttons. We’d love to know who made then and when. They do have a 1950s look and possibly were made in Melbourne.
New NZ buttons:
General Plastics (and their predecessors) produced buttons in both Australia and New Zealand from the 1930-40s (see the NZ and General Plastics pages for more details). Below are 3 variations of branding/printing on Beauclaire style cards:
And here are some more photos showing styles and colours: