Porcelain cup designed for the coronation of Alexander III done by the Imperial Factory

This is second part of the modified post that previously was entitled “Two Russian Cups” posted five years ago. I am modifying this post because after several Russian cups I had put in CW lately I have more knowledge and I decided that both cups are interesting enough to have a separate one for each. Both cups were bought to Graciela for ten dollars each one.
Here I am describing a cup from 1890 very similar to the one here http://www.ebay.com/itm/Antique-Russian-Imperial-Porcelain-Factory-Cup-Saucer-Tsarskoe-Selo-Service-/152681790650 that is described as “Cup & Saucer from the Tsarskoe Selo Palace Service. Made by the Imperial Porcelain Manufactory, St. Petersburg, from the reign of Nicholas II. Manufacture Date: 1914 Condition: Chip to outer rim of saucer, signs of residue from possible attempted restoration; chip to cup with crack running down one side. US $975.00”. Mine is in perfect condition and is older. For me it was very surprising that a piece from the palace where Alexander III inhabited with all his family could be here in Córdoba. Alexander was a patron of the arts. In his reign, the Imperial Porcelain Factory began to prosper again. Every Easter, numerous porcelain Easter eggs were made at the Imperial Factory for the Tsars family to be given away as gifts.
This cup seems part of the service originally designed for the coronation of Alexander III and Maria Feodorovna in 1882, but the simple elegance of the service allowed it to be used over the following decades and additions were made during the reigns of Alexander III and Nicholas II. The official emblem of Russia dominates the decoration of the service. This emblem was done by command of Alexander II that created the Department of Heraldry of the Senate created the Heraldry Department, which was headed by Baron B. Kene, especially for work on coats of arms. He developed a whole system of Russian state emblems (Large, Medium and Small). On April 11, 1857, Alexander II approved the coat of arms of the Russian Empire - the double-headed eagle. The entire set of state emblems was also approved which were supposed to symbolize the unity and power of Russia. In the center of the coat of arms there was the French golden shield with the two-headed black eagle. It was topped with three imperial crowns and was holding an orb and a scepter in its paws, and had Moscow St. George emblem on its chest. The central part of the shield was integrated in the shadow of the main imperial crown and the holy banner above it. 6 shields with coats of arms of principalities were located to the right and to the left of the banner. Here I tried to get into the picture the details of the six principalities. This emblem existed without any changes until 1917.
On the base of the cup the cypher of Alexander III in green underglaze with 90 for the year 1890 and “EK” most probably the painter of the double headed Eagle. All the design is simple, in comparison with the other Russian cups I had posted, an modern, including the blue band and gilt. Thanks so much for looking.