ON THIS STAMP THERE APPEARS TO BE A RED FLAIR SIGNALING THE AIR CANADA JET. THIS OCCURRED ON SCOTT 1145 THE THIRTY SIX CENTS 50th ANNIVERSARY AIR CANADA STAMP ISSUED SEPTEMBER 1, 1987. THE STAMP IS IN VERY NICE CONDITION. IT IS A USED STAMP. FOR OTHER ITEMS OF PHILATELIC INTEREST ESPECIALLY ERROR STAMPS PLEASE VISIT MY OTHER ADS.