Whatever silver with Russian Imperial eagle is a modern FAKE, unless proven otherwise with rock solid provenance, which is rare today. When I was young, I had the privilege to visit Russians who emigrated after the revolution; some of them were poor, some have managed to save property, e.g. boxes full of Imperial regimental badges, even paintings, porcelain and furniture.
Now the unfortunate destiny of Imperial family is exploited by fakers, and they protect each other.
In a word, one cannot rely on marks any more, so better forget it and by something else.
Many thanks. Thank you. I did not know, I did not know it. Although it is still beautiful, it loses all its charm, of course