I've a pair of these, and I know I've seen them before, but I can't for the life of me find the maker anywhere.
The texture on the side is quite remeniscent of Jorma Vennola's 'Kuusi' (Spruce) series for Iittala, but I can't find anything that matches. Likewise, it doesn't pop up in any of the Kosta Boda references I have.
Any help much appreciated.