Hello all and thanks for everyone's help in advance and a Happy New Year to all. I have very little knowledge of Scandinavian glass and have a large vase that has a very distinct base treatment and wondered if someone can identify this by description. it is cased glass and mould blown and the base has 2 concentric raised rings and then a raised button to the centre. There are no marks anywhere else. It is a very similar colour to whitefriars Kingfisher Blue. Thanks guys. Markus