An early St. Ives marked Troika Double Egg Cup produced exclusively for the Heals department store in London from the late 1960's. Decorated with an overall titanium white tin glaze with intricate painted patterns in blue around the base, these are now quite rare as many were broken in use.
The base carries the printed early Troika St Ives backstamp and there is no painters monogram which is totally correct for the early pieces. In excellent condition, this egg cup appears unused and was probably a decorative piece rather than a piece of tableware.