The desperate search to find Melbourne's mystery $55 million Powerball winner goes on, with Tatts making one last ditch attempt to find them.
Powerball will do a "memory jog" on Thursday throughout and around Barkly Square shopping centre and Brunswick to try and uncover the winner of the entire January 11, 2018, draw.
The mystery winner of Australia's largest unclaimed prize bought their ticket at Scole Lotto and News in Barkly Square and has just one month left to collect it directly from Tatts.
The winning ticket was unregistered and Tatts has been encouraging everyone to search and check tickets in their homes, cars and workplaces.
After July 11, the money will be held by the Victorian State Revenue Office, from which the winner can still claim the prize indefinitely.
The winning numbers were 32, 7, 5, 34, 38 and 11, while the all-important Powerball number was 12.