https://www.onthehouse.com.au/property/nsw/alexandria-2015/1-9--13-o-riordan-st-alexandria-nsw-2015-12240665
And this says that "1/9-13" is the same property as "9-13": https://www.realestate.com.au/property/unit-1-9-13-oriordan-st-alexandria-nsw-2015