Mid century modern.

4 Unused surplus, 4 used in good condition.

Packing material was opened to show contents. 
Shape is like a rectangle with a radius on top.
Price is for one.
On the surface of the glass panel a 16 point star. (not cut into the glass)
Dimensions: 7-3/4" X 6" plus minus 1/16".
They used these for union made and Progress pendant lamps.

573-8