Topic: Is it possible to date Guernsey Island Studio Glass ?

[Argonite]

I have a very pretty little posey vase from Island Studio Glass (Guernsey)
Does anyone know if it is possible to 'date' these items and can anyone say exactly when this studio ceased production ?

Here is the link to my gallery - the first is the 'three lions' impressed mark (ISG #1), from here please feel free to access the other three images - ISG #2 through #4.

http://glassgallery.yobunny.org.uk/displayimage.php?pos=-8311

Once again, many thanks in anticipation.....

[Lustrousstone]

According to Great Glass they closed down in 2002

[Argonite]

 

Thanks Christine - I saw that too but was a mite concerned that the info came to them 'second hand' 
so was looking for some solid reference.

Your response is very much appreciated.

Roger