Janice and Robert McNair's Stonerside Stable has purchased the 4-year-old filly Argentina from the Wildenstein family's Dayton Investments. The daughter of Sadler's Wells will stay with current trainer Bobby Frankel, who is pointing her for the Flower Bowl Invitational Handicap (gr. IT) Oct. 7."Argentina epitomizes the Stonerside philosophy of acquiring top race mares for our broodmare band," said John Adger, the McNairs' racing and bloodstock manager. "She has already proven herself in grade I competition, and with her bloodlines, we feel she will be a top broodmare when her racing career is over."A stakes winner in France, Argentina has two wins and seven placings from 11 starts, including second-place finishes in the group I Prix de Diane (French Oaks) and the group I Prix Saint-Alary. Five of those starts have come since she was imported to the United States late last year and include placings in four graded stakes. Most recently, Argentina was third in the Diana Handicap (gr. IT) at Saratoga July 29. She has earned $506,897.Argentina is out of the Woodman mare Airline, one of three stakes winners produced by group III winner Action Francaise. Action Francaise's dam is Allez France, who was Horse of the Year in France and divisional champion four times. A daughter of Sea-Bird and Priceless Gem, Allez France won the 1974 Prix de l'Arc de Triomphe (Fr-I) and earned $1,262,801.