This is a unique Antique U.S. Postal Service Coaster.
It is Porcelain painted with graphics and trimmed in Brass.
It is 4&1/2" Wide.
It says:
The Development Of The U.S. Postal Service
"Missile-Mail-Service"
(Experimental)
One Of A Series
The Reuben H. Donnelley Corporation
Direct Mail Division
Used, but no cracks or chips. Graphics strong. Brass needs to be polished.
View my pictures for details.