depicts the portrait of Prince Constantine in profile, face to the right. On a circle the inscription: "Б.М.КОНСТАНТИНЪ I ИМП.И САМ.ВСЕРОСС." below the date of issue "1825.".On the reverse side
in the centre inside a Laurel wreath depicts the coat of arms of the Russian Empire
first half of XIX century: the double-headed eagle with raised wings, in the clutches of the scepter and Orb, on the chest surrounded by a chain of Andrew's order of the shield of Saint George slaying a serpentine dragon with wings. On a circle the inscription: top - "ЧИСТАГО СЕРЕБРА 4 ЗОЛОТН: 21 ДОЛЯ"(start and end separated by a dot) at the bottom of the word "РУБЛЬ"depressed letters.
Both sides of the coins have a protruding around the circumference of the rim with small repeating patterns.
The picture shows a copy from the exposition of the State Hermitage ", the Ministry of Finance of the Russian Empire
In 1825, during the first days after the death of Alexander I began the minting of silver rubles, with the portrait of his brother Constantine, who was to take the throne. But Constantine abdicated in favor of his younger brother Nicholas, managed to produce only 8-9 coins from a non-existent Emperor. One instance is in the collection of the Hermitage Museum, the second in the state, the third in the Museum of the Smithsonian Institute (USA), and the rest in private collections. The demand for that coin among collectors has been a long time, so often made fakes. The most famous forgery is "the Ruble Trubetskoy", made in Paris in the 1860s at the mint for Prince A. V. Trubetskoi. Currently a huge number of copies, they are usually low quality and are easily recognized by experts, but misleading beginners who believe that they got "the" ruble.