THIS IS A VERY NICE EXAMPLE OF A TAGGING ERROR. INSTEAD OF THE NORMAL TAGGING ON BOTH EDGES OF THE STAMP THERE IS ONLY TAGGING ON THE LEFT SIDE. THIS OCCURRED ON SCOTT 589 THE FOUR CENT MACKENZIE KING DEFINITIVE. THE STAMP WAS ISSUED OCTOBER 17, 1973. THE STAMP IS USED AND IN NICE CONDITION. FOR OTHER ITEMS OF PHILATELIC INTEREST ESPECIALLY ERROR STAMPS PLEASE VISIT MY OTHER ADS.