VINCENT O'BRIEN RATED SIR IVOR AND NIJINSKY AS THE TWO BEST HORSES HE EVER TRAINED. RIBERO ADDED THE ST LEGER TO HIS IRISH DERBY VICTORY LATER IN 1968. RARE OPPORTUNITY TO BUY THE RACECARD FROM THE 1968 IRISH DERBY HELD AT THE CURRAGH ON JUNE 29TH 1968.