If you read old posts you will see references to Kate and her business “Buttonmania”. She sold the business last year; it now is located in Highett. Here is an old entry from the business’s blog that makes me a little sad … that this buckle is not mine!
A friend of Kate’s, and a new contributor, Deborah Zinn, has shared this photo of some interesting plastic Myer Emporium branded buttons. It is possible (from the narrow carding) that they date from the 1960’s.
If you have perused the page of Beauclaire advertising you will be aware that they had a cross-promotion with Twinprufe knitting yarns in the 1950’s. From a vintage Twinprufe knitting booklet here is an advert for Beauclaire buttons.