A detailed catalog of coins of the Russian Empire and the pre-Petrine period from 1359 to 1917 Includes all varieties, new models and trial Royal coins. The scales of the Grand Dukes are presented in the form of drawings, as well as additional photos of this type of coins. All photos of coins are in good quality. The app works both online and offline. Any photo of the coin can be easily enlarged, the photos are made clickable so that you can see any detail and distinguish the variety! The app a