I've been offered a pair of decanters by a seller in Denmark, and they think they might be turn of the century (well, last century) Holmegaard. The style is about right, but I'm not 100% as the glass looks too thin and the stoppers don't look right.... I hope I'm wrong!
Just thought I'd try and verify before accepting/declining the purchase:
(sorry about the photo quality, it's beyond my control - I tweaked it as best I could)