"This was listed in the unknown gallery as similar to Viking Epic. I can confirm that it is, in fact, from that pattern.
The neat thing about Epic was that the pattern was made for so long that they kept adding new pieces to it through the years, usually in groups that shared certain design characteristics. This one I recognized because it has the same foot as one of the candleholders we showed in our Glass Candlestick Book 3.
I checked my catalogs and found this vase in the 1975-1976 catalog as no. 7309. (The "73" at the beginning of the pattern number indicates the year that it was introduced.)"