Topic: large purple goblet with air twist id please

[bat20]

Hi all,this goblet is 11.5" high with a ring and decent furry wear on the base,the colour is in the red end of purple with an air twist stem and striations on the foot,i would think a decorative piece as the inside has the most texture and it would take a whole bottle easy,not that it would stop me :)any ideas many thanks.

[bat20]

I think i've found something related to it described as 70's glass,so quite retro for the period but it wouldn't surprise me as another i found,it's match,was a very modern blue colour.