Such a charmer of a child's cup, unmarked but which a little research tells me is likely German, c. 1930s. What a fabulous color scheme on this child's outfit, right down to the white clogs, all just right against that excellent blue. And then these terrific green trees and best of all bright red balloon, floating off into the distance. Charming, and a but winsome too.
3" d x 3 15/16" across at handle; 2 15/16" t. Wear/erosion to the enamel around the base, on the handle and around interior lip. I wouldn't reccomend for drinking at this point, but perfect for holding pencils or crayons or a little potted plant!