First, thanks to everyone who was kind enough to reply. I really appreciate you taking the time to help me. Strangely enough, I looked up art glass and found a decanter by Blenko (#5931) that looks very similar, but without the "head" in the middle. The measurements were not correct, though...
Hi! I looked at the bottle (vase) and found a few bubbles in the neck that are elongated vertically. In the bottom half there are some, but they are round. On the bottom there is an oval indent and there is some glass that appears "stuck" on the base surface (looks like there was something...