please help !!! eapg "banded portland" look-a-like vase

Hi everyone. I need help with this banded portland look-a-like. This vase is 10 in tall and very closely resembles US Glass Banded Portland pattern. From what I can see about US Glass version is a single band, not 2....the base is clearly not the same and the bands on this vase have an extra groove line just above and below each band of diamonds. This vase is very thick and full of some large bubbles. Reacts very well to UV. 6 colonial-style panels. Any help with this would be greatly appreciated. Thanks everybody :)