BY THE IMPERIAL PORCELAIN FACTORY, WITH BLUE OVERGLAZE STATE PORCELAIN FACTORY MARK OF HAMMER, SICKLE AND COG, DATED 1921

The design for the above plate is almost certainly by Rudolf F. Vilde. Other plates designed by or attributed to Vilde also incorporate Imperial coats of arms or names from the original Imperial Porcelain Factory, hidden beneath black paint in the design. In this instance an Imperial coat-of-arms can be seen beneath the black block after 1917 in the border. All known versions of the plate Proletariat of the World Unite 4 1917-1921 have been painted on Imperial plates printed on the border with Livadia (the Imperial yacht) which is then hidden beneath a pannier in the border. Long Live the IX Congress has the black circle of a sunflower on the border, masking an Imperial coat-of-arms. (N. Lobanov-Rosvosky, Revolutionary Ceramics Soviet Porcelain 1917-1927, London, 1990, pp.68-69.)