THIS IS A VERY NICE EXAMPLE OF A TAGGING ERROR. INSTEAD OF THE NORMAL TAGGING ON BOTH EDGES OF THE STAMP THERE IS ONLY ONE WIDE CENTER BAR. THIS OCCURRED ON SCOTT 586 THE ONE CENT SIR JOHN A. MACDONALD DEFINITIVE. THE STAMP WAS ISSUED OCTOBER 17, 1973. THE STAMP IS IN MINT NEVER HINGED CONDITION. FOR OTHER ITEMS OF PHILATELIC INTEREST ESPECIALLY ERROR STAMPS PLEASE VISIT MY OTHER ADS.