For your consideration, here is a Vintage Seattle World's Fair Small Souvenir Ceramic Plate, from Seattle, Washington, Made in Japan.  It has a diameter of 4 inches.  It has a CSC, 21st Century label on the back and a string hanger.  It has a little wear on it.  No chips, crazing or cracks.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (530.909m-.7bb)