Hi Glasstruffelhunter and Angela B, Thank you both!
"End of Day", what a lovely phrase; makes me think of misty valleys but it is more likely to be what we call "fusk" in Denmark. Work that was done after the days production. Am I right?
Angela B, I'm pretty sure it is that old, but I'll check with my Mum when she is up and running. The paperweight you posted is certainly similar but the clear glass surround on mine is much thicker, so that the coloured part doesn't begin to approach the surface.
(Small world.. my sister-in-law is from Crieff)