Today I have picked up an Ariel vase and a Kraka vase at an auction house... so not a bargain

Normally I collect venetian glass but I love this Ariel vase!!!
Can anybody give me more informations about it? Age?
Is it a rare piece?
By searching the web I only found Ariel vases with the Gondoliere, Girl with dove and others.
But find nothing with a panther.
On the other side is a butterfly and other mysterios things

It is signed: Orrefors, Ariel No. 135 G, Edvin Öhrström
What stands the "G" for?
I think, next month I will buy a book about scandinavian glass

Thank you in advance
(http://dl.dropbox.com/u/7980585/Orrefors/IMG_4091k.jpg)
(http://dl.dropbox.com/u/7980585/Orrefors/IMG_4097k.jpg)
(http://dl.dropbox.com/u/7980585/Orrefors/IMG_4099k.jpg)
(http://dl.dropbox.com/u/7980585/Orrefors/IMG_4093k.jpg)
(http://dl.dropbox.com/u/7980585/Orrefors/IMG_4130k.jpg)