This lovely small geometrically shaped vase is of Scandinavian origin and most probably Orrefors or Kosta. It is signed on the base Stromberg and numbered. I believe Stromberg designed for these factories. The glass is a rectangular and appears to be cased. There is a layer of clear and layer of amber. There is a small rough spot near the base on one side, and other than that, condition is excellent. The size is 2.25" on each side and 2.75" in height. The outer layer is clear and the inner layer is amber. Thickness of the body is approx. .25". The signature on the base is Stromberg. Sides flare slightly.