Just thought I would add this for anyone interested. I emailed Paul Musgrove regarding this bowl and he very kindly replied with the following information:
"You have indeed a piece that was made by the Glassworks in 1984. This was a production piece made in a number of colour ways at the time.
Think if I remember rightly it retailed for around £50 maybe a bit less. It is a long time ago! Anyhow, definitely made by me along with assistants, Graham Muir and Rab Ward.
They were with me right up to the end in 1990 or so. When this was made we were based in our original studio in Holyrood Road in the Old Town of Edinburgh.
Was a blown bowl with pick up colour, the clear trail was applied to the outside during the hot process and the blue rim applied before it was opened up into a bowl".