Porcelain Valve disc with Peter the Great

[OlegTsi]

Farforvaya disc, 44 cm in diameter. Apparently this is a memorial disc, devoted to the anniversary of the death of Peter the Great. Black and white paint, with some additions of yellow in places where the coat of arms, ships, etc., in these same locations on the touch feels relief image. At the poppet meyutsya few flaws, like the collapse of bubbles in the glaze has burned. On the back of poppet inflicted stigma of the Imperial Porcelain Factory of Alexander III. In the same color are made on the shoulder of the rear of the 4 points.
Can you please tell whether this Valve disc value, if so, what about what. Thank you.
Again execute the request of his friends, who hope to receive from members of the forum useful information.