The Gun Runner show continued to roll on at the Keeneland September sale when Coolmore's M.V. Magnier went to $1.55 million to acquire a son of the Three Chimneys stallion (hip 969) Thursday. The yearling, bred by Three Chimneys and consigned by Four Star Sales, is out of graded winner Twenty Carat (Into Mischief). His third dam, Silk n' Sapphire (Smart Strike), produced Grade I winner Shared Account, dam of another Grade I winner in Sharing.Yearlings by Gun Runner have attracted the top price at the first three days of the September sale and the stallion has been represented by 12 million-dollar yearlings so far at the 12-day auction. Magnier and Peter Brant's White Birch Farm purchased the top-priced $3.3-million colt during Monday's first session of the sale.The post Coolmore Strikes for a $1.55-Million Gun Runner Colt appeared first on TDN | Thoroughbred Daily News | Horse Racing News, Results and Video | Thoroughbred Breeding and Auctions.