Andy , there is a Josef Emmerich born 11 June 1915 , listed in the National
Archives of Australia with a date range of 1951-1965.Could be your man.
I have attached link , it normally cost about AUD 25.00 to get a copy of the file.
Regards Mike
https://recordsearch.naa.gov.au/Sear...8146526&isAv=N