help ID a wooden 'Fish in Australia

A reader of my Sunfish sailing blog reached out for help with identifying a wooden 'Fish he's got in Australia.

I live in Victoria Australia and have just acquired what I think is an old Alcort Sailfish. I am thinking of restoring it but am missing the whole rudder assembly and centerboard. Also the mast has stays which as I understand is not how sailfish are rigged. The yacht measures 11 foot 1 inch long and is 3 feet wide at the widest point. Will include some photos. Any help...

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help ID a wooden 'Fish in Australia