In the late 50’s the original ‘Gulvvase’ was only produced in four colours – dark green, amber, dark blue and clear. It was a bit later on, around 1963/64 when there was a trend for brighter colours, that the vase was also made in an opaque white, cased in clear glass. Around 1967 the vase was made in yellow cased in clear glass and opal cased in coloured glass. The colours were opal/blue, opal/red, opal/green and a very limited number which used Kastrup’s original dark olive green over opal glass. Around 1970/71 an opal/yellow colourway was introduced. The vase is also found in clear, light blue, grey smoke, and rauchtopaz colourways. They were made in quite large numbers by Cascade Glass of England under license from Holmegaard. There are five sizes to collect, starting at 25cm going up to 50cm.