The Russian Federation (early Soviet Russia, RSFSR) is the historical heir but not legal successor of the Russian Empire, and the Russian Empire was not party to the Berne Convention (it was not country of Union for the protection of the rights of authors in their literary and artistic works), so according to article 5 of the Convention this work has no country of origin except:
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Tsar Nicholas II reviewing soldiers of the 157th Imeretinsky Infantry Regiment and the 158th Kutaisi Infantry Regiment at Bobruisk Station, 21st December 1904