Recently I came across a few of these stunning, extra large chocolate cups. The design is “Sinilintu” or Bluebird by Raija Uosikkinen, in production 1966 to 1975. The striking and bold design of a blue bird amongst flowers and ferns, is beautifully intricate and detailed.
The large (500ml) cup form looks equally good with or without a saucer because of its footed profile.
This pattern as far as I have discovered was only used on this form – not as part of a dinnerware series.