Tailors’ Buttons
S.A.Wn. Co, Adelaide.
The South Australia Woollen Company existed from 1883 (although there was a prior business run from 1868-1878) until it was rebranded as the Onkaparinga Woollen Company in 1928. The brand is now owned by William A McNeil & Co Pty Ltd, and still produces quality woollen products.
See https://onkaparinga.com.au/blog/onkaparinga-since-1869-a-history-in-pictures/
https://fabrik.org.au/history-of-the-onkaparinga-woollen-mill/