THIS IS AN INTERESTING CANADIAN VARIETY STAMP. THE LOWER SPARROW HAS A WHITE CHEEK INSTEAD OF YELLOW. THIS OCCURRED ON SCOTT 496 THE 6 CENT WHITE THROATED SPARROW OF THE JULY 23, 1969 BIRDS ISSUE. IT IS IN VERY NICE CONDITION. IT IS A USED STAMP. FOR OTHER ITEMS OF PHILATELIC INTEREST ESPECIALLY ERROR STAMPS PLEASE VISIT MY OTHER ADS.