Vintage Blown Glass Paperweight Controlled Bubbles Clear Sphere Ball

Heavy crystal ball paperweight. Unique piece to display on your desk, table or shelf. Home or office decor . Clear glass sphere with controlled bubbles inside. Bright white areas are reflections. Great previously owned condition. No damage that I can see but there is a manufacturing flaw inside glass, looks like a dark line and lighter spot. I believe it is a bit of slag trapped inside. See photos. Measures approx 3 1/2". Check out my other items. Reasonable offers always welcome.