Alas, not a unique piece, but it is part of Hadeland’s art glass range. The series consists of two vases, height 16,5 cm and 20 cm, two bowls, diameter 18 cm and 23 cm, and a platter, diameter 35 cm. All Hadeland art glass made after 1970 is signed the way your vase is, with just the artist’s initials. This series dates from 1976, and has no name. But it is a nice vase, agreed.