yup, the pulled swirls are very Border Art Glass.
I'm very "pulled"myself towards something to do with Ysart somehow - which is why I chose BAG.
It's not Monart, is it? A scarce, hitherto unknown colourway?
N S-C, because of the similarities to his Chartreuse pieces (although in close-up, the dark swathes are much more diffuse).