Bertil Vallien Kosta luster bowl made at Kosta in the 1970s. This type of glass is no longer produced due to the complexity of the process. Designer Bertil Vallien; Maker Kosta (Sweden); Year 1970s; Material Orange lustre glass; Size: 3.0 inches high by 4.6 inches wide; Hand signed “Kosta 57440 B Vallien.” Price: $220

May be seen at: Antiques Bel Air – Lowry Hill, 1758 Hennepin Avenue, Minneapolis, MN 55403