Alas, not a unique piece, but it is part of Hadelandâ€™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 artistâ€™s initials. This series dates from 1976, and has no name. But it is a nice vase, agreed.