Spectacular! Princess Elizabeth and Prince Philip visited Canada in October 1951 and this is a commemorative maple leaf brooch. We can't find record of this brooch, nor is there a hallmark on it. Looks like rhodium plate, and has red, blue and clear crystals. The date Oct 1951 is part of the setting. Looks almost new. A bit of wear on the pin stick only. 1.5" wide x 1" length