Uranium Glass Pulled Leaf & Vine Vase - Unknown Maker

One of my two finds from the Baltimore Summer Antiques Show - this intriguing vase is made on an opaque uranium glass ground, with Russian green leaves pulled down and around the body and onto the base. The rim is fire polished and the pontil is ground and partially polished. It is about 6.5" tall. I think it's Bohemian, not sure exactly how old or who could have made it. Initial thoughts were Loetz (although I've kind of given up on that idea), Poschinger, Harrach, etc. I don't think it's modern because of the base wear, because of the uranium glass ground, the shape, and the fact that it is unsigned. (a studio piece of this caliber would probably have a signature). So I'm filing it as a mystery piece for now - a mystery that I would much rather have sitting in my cabinet than somewhere else. :)