The vase is signed RC PL 2000.
Holmegaard was a part of Royal Scandinavia from 1985 to 2000, which consisted of Georg Jensen, Royal Copenhagen, Orrefors, Illums Bolighus and Holmegaard.
Many of their items were sold under the Royal Copenhagen name.
The Duckling vase is designed by Per Lütken in 1952 and was first taken out of production in the 1970s.
It is briefly resumed around the year 2000 for the celebration of Holmegaard Glasworks's 175th anniversary, but turned out to be technically to difficult to produce the Duckling again, so the production was stopped and only a few vases was send on the market.