AN own-sister to the Arc and six-time Group 1 winner Alpinista is expected to make a seven-figure sum when she is offered for sale at Lot 72 at the Tattersalls October Yearling Book 1 Sale on Tuesday.

Kirsten Rausing of Lanwades Stud in Newmarket and Staffordstown Stud in Kildare has put the daughter of Frankel on the market a week after the owner-breeder sold a Frankel half-sister to Sandrine for €1 million at Goffs.