Very hard to see unless you really examine closely. I hope I listed correctly as I'm not a glass expert, just a collector of neat things. I probably picked this up in Chicago art fair back in the day before my kids were born a few decades ago. I wish I knew more about the details. Please ask questions as you probably know more about this item than me.
Will be listing several other matching pieces. See last pic showing a few others I will be listing. The item "Huge Viking Mid Century Modern Blue Art Glass 30 Floor Vase Large.
STUNNING" is in sale since Saturday, January 4, 2020. This item is in the category "Pottery & Glass\Glass\Glassware\Elegant\New Martinsville/Viking". The seller is "axxxxd" and is located in Grafton, Wisconsin. This item can be shipped to United States.