A share in Siyouni and a breeding right in Showcasing are set to be offered on Arqana's online bidding facility in the coming weeks.
Siyouni, an 11-year-old son of Pivotal, is the sire of 26 stakes winners, including this season's four-time group 1 winner Laurens. He has also been represented in 2018 by Australian group 2 winner Aylmerton and Diamond Jubilee Stakes runner-up City Light.
His fee at Haras de Bonneval this year was €75,000 (US$85,200)—believed a record for France.
The share in Siyouni that is being offered for sale entitles its owner to one nomination every year, plus one extra nomination in 2019 and then every other year.
Registrations for the sale are open on Arqanaonline.com, with bidding set to kick off at 9 a.m. GMT Nov. 15, and close at 5 p.m. GMT.
Whitsbury Manor Stud hotshot Showcasing ranks as one of Europe's most exciting young sires.
Already the source of top-class sprinters Quiet Reflection and Tasleet from bargain basement fees, the son of Oasis Dream has supplied this season's talented 2-year-olds Advertise, Mohaather, and Soldier's Call from his first crop bred at a fee of £15,000 ($19,100).
Showcasing's yearlings of 2018, conceived at a fee of £25,000 ($31,880), have been popular in the sale ring this year, with lots selling for €850,000, 650,000gns, and 600,000gns.
The breeding right will go under the hammer on Arqanaonline.com Nov. 16, also from 9 a.m. GMT to 5 p.m.