This is a vintage Fry Ware Ovenglass pie plate made of clear opalescent glass. It has a diameter of 9 inches and is a single piece. The plate is antique and was manufactured in the United States between 1900-1919. It is an original piece with a patent from 1917 and 1919. The pie plate is round and made of glass. It is perfect for collectors of vintage bakeware or those who appreciate antique kitchen items.