This is a Bohemian Czech art glass vase dating to around 1930.
The vase is 6” high and 3 ¾”” wide at the belly.
The inner glass is white. The outer glass is a type of spatter glass with green, brown and black. I refer you to your copy of “Collectible Bohemian Glass 1915-1945” by Robert and Deborah Truitt, page 55, Items 6-8. Here you will see the same type of glass pattern, however the colors are different.
There is a short neck, the type that is generally used to hold a metal flower frog. However, there is no indication that this vase ever held a metal flower frog, and the size is probably too small. When glass has held a flower frog, there will often be wear around the mouth edge. There is some roughness around the inner edge of the mouth, but it is due to how the inner glass meets the outer glass.
There are no chips, nicks or cracks, just the slight roughness I mentioned.
On the last photo, you can see my fingers through the glass.
Bohemian Czech Art Glass Vase Green Brown Black Over Cased White Applied Rocket Ship Feet c 1930