Unfortunately, no nurseries which may grow this rose have shared the information with this site. As of right now, there is no source from which you might purchase one.
The "Combined Rose List 2011" says that three nurseries in Australia and one in NZ sell it, which doesn't help you, but it's interesting to see where it has survived.
Thanks for the tipp. I saw this rose with my own eyes in Zweibrücken in a Rosarium, but unfortunatelly it is not for sale. I fell in love with this rose and I really want to buy it, but since it is an old Kordes rose from 1974 it is not available on the market any more. To Australia I am not going but maybe they can send it for me by plane or somehow.
Importing budwood from Australia is possible but expensive - it has to have a Phytosanitary Certificate, and there is no guarantee the budwood will survive. Our seasons are 6 months different from yours. Better to try Sangerhausen, or maybe even the Kordes Nursery.