This article appeared on the 6th April 1947 in the Daily Telegraph (Sydney). The buttons are apparently all Australian made, but it is not stated by whom. I don’t recognise any of them … but I wish I had them all. Sigh. Note that it states that pre-war buttons were utility in nature and made of casein. These buttons include casein,perspex and metal.
City of Melbourne, Stokes & Sons:
This is only one of several designs used over the years using details from the coat of arms. From the City of Melbourne Collection: