National China Japan Patricia Pattern Coffee Cup Saucer Tableware Floral Flowers (ONE) 
I have 3 of these saucers available.  One has a darkened spot to the inside area of the plate.  Could be a very old indent into the saucer I dont believe it to be a chip ... 
Vintage saucers can have slight defects ... I check all my items to make sure they are not chipped to the point of not being able to be used safely 
Measure 5 1/2 inches in diameter ... center area where cup should go measures 2 1/8 inches in diameter 
Weighs 5.3 ounces ... without box and bubble wrap materials