South Aust commemorative item

[lettman]

A recent acquisition. I was told it emanated from Clare, South Australia, as a WW1 commemorative item, but have no other background information. It hasn't scanned very clearly, but the obverse shows accurate colour patches of key SA units, while the reverse has various images plus the inscription 'In Honour of the Brave and Selfless Men and Women from South Australia who Served in the Great War'. It's quite heavy white metal and enamel, 57mm in diameter.