The 13-year-old U.S.-bred mare Amizatte (by Forty Niner), offered with her 2005 colt by Montjeu , topped day one of Tattersalls July mixed sale when bought by Irish agent John O'Byrne for 150,000 guineas Tuesday in England. The mare, on whom John McCormack was the underbidder, was offered in foal to Coolmore Stud freshman sire One Cool Cat. The price was a July record for a mare with a foal at her side."I liked the whole package; she's in foal to One Cool Cat and Montjeu could hardly have made a better start at stud," said O'Byrne. "She's for myself at the moment, and I should think the Montjeu will be resold, either later this year or as a yearling."One other lot reached six figures when agent Richard Frisby bid 100,000 guineas to see off the Curragh Bloodstock Agency's Eamonn Reilly for 2-year-old Costa Brava, a Sadler's Wells filly. Unable to race because of an injury, she was consigned by John Troy."I can't say who she is for, but she will be going to stud here in England," said Frisby. "She's been bought as a long-term breeding prospect, and you've got a few batting for you in the family."Produced from the stakes-placed Pennine Walk mare Dedicated Lady, Costa Brava is a full sister to French group I-placed Acropolis. She also is a half-sister to 1999 Ribblesdale Stakes (Eng-II) and French group II winner Fairy Queen (by Fairy King) and to 2002 Falmouth Stakes (Eng-II) winner Tashawak (by Night Shift).During the first session, 159 horses were sold in all for a gross of 2,465,600 guineas, an average price of 15,506 guineas, and a median price of 10,000 guineas. the median was an opening day record for the sale. In 2004, the first session figures were 154 horses sold for a gross of 2,477,300 guineas, an average of 16,086 guineas, and a median of 8,750 guineas.