Private collection. Made by Kosta Boda, a high-end Swedish brand. This is a rock glass from the BUSTER series. This is the last one I have in stock. The designer is Göran Wärff. I believe it was made in the 1960s-70s. A high-transparency glass rock glass with a flared shape and decoration on the bottom. #kostaboda #sweden #rockglass #vintagecrystal #rareitem #designer - Shape: Flared - Material: Glass - Design: Decorated bottom - Transparency: High transparency Thank you for viewing.