This is a vintage, mid-century modern vase made of hand-blown glass by Alsterfors, a Swedish brand. It was designed by PO Ström and signed by the artist. The vase has a clear pattern with a glossy finish and a dark blue color. It weighs 1.2 kg and measures 5.25" in height and 5.5" in width. The production technique used was hand-blown glass, and it was manufactured between 1960-1969.