NO. 6000 'KING GEORGE V' ATTAINED THE HIGHEST EVER DRAWBAR HORSEPOWER ATTAINED BY A 'KING' - 1951 EDHP. NO. 6001 'KING EDWARD VII' ATTAINED THE HIGHEST EVER SPEED RECORDED BY A 'KING' - 109MPH. BOTH WERE FITTED WITH 4-ROW SUPERHEATERS AND DOUBLE CHIMNEYS FOR THEIR RECORDS.