Expo 67 Man and his World Worlds Fair Montreal Canada

I just got this interesting metal sign in the post today. It's an advertisement for cigarettes and on the reverse it's a poster promoting the 67 Worlds Fair in Montreal. Man and his world was the second worlds fair I went to as a child. I was 8 so I remember it much better than the NY worlds fair in 1964. The sign measures approx 500 by 700 mm