I have this kinda sqaure tray. It looks to have been pressed and stretched as none of the corners are symetrical. There areall kinds of "pits" and bloops in the glass. The inside is very slick, but the outside has a satin feel. The glass has a green cast, like old Coke bottles. In the middle, there is a circle that is about 3" in diameter. Out from that is a series of wavey larger circles (kinda like how plastic looks when heated). Have no idea how old or origin. Any info would be greatly appreciated!!! AH
