Rare Frank M. Whiting black glass and sterling rimmed coasters. They are signed Frank M Whiting &Co Sterling 05 Pat Pending. They measure 4.5 inches on the exterior and 3.25 interior. There are no chips or cracks to the glass and age related dings to the sterling (I have shown photos of the biggest dings in the last 2 photos). There are 6 available the price is for one. I'd be happy to combine shipping and refund any extra shipping cost paid if you order more than one coaster.