Irish 1,000 Guineas heroine Jet Setting will be offered at the Goffs London Sale on the eve of Royal Ascot on June 13.
Snapped up for just 12,000 guineas out of Richard Hannon's yard last October, the three-year-old has proved the shrewdest of purchases, winning three of her four starts for County Kildare trainer Adrian Keatley, including her surprise Classic victory over Minding at the Curragh last month.
Jet Setting holds an entry in the Coronation Stakes at Royal Ascot on June 17, giving potential buyers the opportunity to have a runner at the showpiece meeting just days after purchase.
John Kilbride, part of the Equinegrowthpartners Syndicate who own the filly, said: "Jet Setting gave us our best ever day at the races at the Curragh and we now look forward to another big day in London.
"We have had plenty of interest in her and we feel it best to let the market decide.
"With potential buyers from all over the world in one place, the Goffs London Sale provides a wonderful setting on the eve of Royal Ascot in which to do this.
"This will be the only opportunity to buy Jet Setting and it is a rare opportunity at that.
"The purchaser will not only be buying a Classic winner, but one that is going to the Coronation Stakes on the Friday of Royal Ascot with a serious chance, giving the purchaser the potential for an instant return on their investment."
This is the second time in recent years that Goffs has offered a Classic winner.
In 2013, Irish Oaks winner Chicquita was sold for 6million euro as part of the Paulyn Dispersal.