Imperial Russia Does anyone know what this button is?

[grimble-nibitz]

I have a frock coat in black wool, with all buttons intact, they are like the one shown here. It has a high red collar with bullion, and red cuffs with these buttons also. I cannot find an online translator that makes it clear what they say...?? Any help is appreciated!

[grimble-nibitz]

Here is the coat

[venelane]

Эстляндской

http://en.wikipedia.org/wiki/Governorate_of_Estonia