This is a serving tray in the "Heritage" pattern produced by Federal Glass circa 1940-1955. The "Heritage" pattern features a classic mid-century modern look of Empire Scrolls and Flowers and has hobnail beading -- all of this patterning is actually on the underside of the plate.
11.5" diameter, 1" tall, weighs 3 Ibs.
Great vintage condition. No chips or cracks. If you look very closely you can see some very small scratches, but not noticeable.