Pictured is a small blue & white graniteware coaster available for sale.  The diffused coaster has a vivid, steel

blue coloration and great eye-appeal.  It measures 3/8" in height, 4" in diameter, & dates from 1915 - 1935.  The

interior is white & the border is blue.  A novel shape & form in graniteware....  Excellent condition with no nicks or damage.....