Canada Post issued a new stamp with a photo of Her Majesty Queen Elizabeth II. The photo was taken by Chris Jackson in 2017. The Queen has appeared on many Canadian stamps as a princess and since her coronation in May 1953.
The Maple-leaf brooch, depicted on the postal card example, is a piece of jewelry worn by Queen Elizabeth during her 2010 Royal Tour of Canada and also worn by several generations of women in the Royal Family when they tour Canada.