Hello there, i have been staring a cube glass for a while and i can not find this. There is something similar, a sugar bowl that the lister has attributed to American Fostoria glass on google.
All the Fostoria glass i'm looking at seems very white, this glass has a yellow tint, it's not uranium glass.
It has some age so i'm guessing 1930's, there is wear to the base rim edge.
It's 8 1/2 inches across not including the handles and 4 1/4 inches in height.