This is a Pfaltzgraff Yorktowne large round metal serving tray with an attached ceramic insert in the center top. This item was made in the1970's in the USA. The round pewter tray was made without any markings. The platter was made by Pfaltgraff Company.  The overall measurements are about 11 1/8" in diameter and about 1 1/2" tall. The attached ceramic in the center measures measures about 5 5/8". This item is in very good condition for it's age without chips or breaks. Has many small surface stains and light surface scratches in the metal. Thanks for looking!