THIS ERROR, A RED STREAK DOWN THE MIDDLE OF THE STAMP, IS ON THE CANADIAN STAMP SCOTT 648 THE 8 CENT MERCURY AND WINGED HORSES ISSUED ON OCTOBER 9, 1974. THE STAMP IS USED AND IS IN NICE CONDITION. FOR OTHER ITEMS OF PHILATELIC INTEREST ESPECIALLY ERROR STAMPS, ANTIQUES AND VINTAGE COLLECTABLES PLEASE VISIT MY OTHER ADS.