This is a black depression amethyst glass low footed flat candy dish or small cake stand. It is paneled with eight sides and exaggerated rounded points at the corners. I have not been able to determine the pattern name or manufacturer. It was probably made by either US Glass or LE Smith. The dish is 8 1/4" across point to point and 2" tall. It is in excellent condition with no chips or cracks. It is scratched from use on the top.
Black Depression Glass Pedestal Low Candy Dish Octagon Paneled