Height 19 in., Diameter. 4 in. Signed on bottom. This large and visually arresting Kosta Boda art glass vase is of broad ovoid form with an asymmetric pinched rim, the thick glass walls densely decorated throughout with a mottled tortoiseshell spot pattern in fiery combinations of deep red, warm amber, burnt orange and olive brown -- the irregular cellular spotting creating an all-over surface of extraordinary visual richness that shifts and glows with transmitted light. The mottled spot decoration is characteristic of several celebrated Kosta Boda series from the 1980s and 1990s including the Can Can series by Kjell Engman -- described in auction records as a large shaped vase with broad flat rim decorated in mottled swirling decor in purple, orange, turquoise and yellow upon an orange ground -- and the Floating Flowers series by Olle Brozen with its speckled and mottled floral forms in brick red and cream, with the fiery orange and red colorway of this example suggesting a warm-palette variant within the Kosta Boda Artist Collection tradition. Kosta Glasbruk was founded in 1742 in Smaland Sweden, making it one of the oldest continuously operating glassworks in Scandinavia, and following its 1976 merger with Boda, Afors and Johansfors became Kosta Boda -- from the 1980s onward attracting a roster of internationally celebrated designers including Bertil Vallien, Ulrica Hydman-Vallien, Kjell Engman and Gunnel Sahlin whose Artist Collection series produced limited edition signed and numbered works that are actively collected worldwide. The base should carry the engraved Kosta Boda signature, artist name and series or pattern number that would confirm the precise attribution and series. Condition is very good with no chips or cracks visible.