1940s vintage 'depression glass', an ultramarine color glass bowl. I love this color and it's hard to find, made only for a year or so, right after WWII.
This is a footed bowl 9 3/4" in diameter across the rim, 3 1/2" tall. It's unmarked, Jeannette glass did not mark their pieces. Condition is excellent, I don't believe this was ever used.