100% Holmegaard (but only 87% Holmegard!
). The colour's officially called "Smoke" (even in Danish).
It was designed, as Ivo says, by Lutken and produced from 1956 until probably the mid-late 1970s. The signature on your example dates it between 1965-1970. In the 1956 catalogue it appears as production/pattern number 15738, which is the number on the base of yours.
Oh, as indicated above - Holmegaard are a Danish firm, rather than Swedish.