Wonderful 1962 Seattle World's Fair Pin Dish featuring the Space Needle. The center picture is surrounded by a blue ring with the number 21 repeated in the ring. This pin dish measures 3 5/8 inches square and is free of chips and cracks. There is a partial label on the back. The Seattle World's Fair took place from April 21, 1962 to October 21, 1962. The fair, also known as the Century 21 Exposition, had a futuristic theme looking ahead towards life in the 21st century.