With the transformation into the Imperial Throne, the coat of arms was changed to a black Russian Imperial Eagle with the Chi Rho symbol in the escutcheon. Bakov emphasized the Chi Rho symbolizes the formation of the Christian Monarchy in the Roman Empire by Constantine the Great who saw the symbol in the skies before the Battle of the Milvian Bridge in 312 AD. The eagle holds in its talons the sceptre and globus cruciger, two of the most prominent symbols of Christian monarchy.