If there is no maker's mark, the object is imported. It was forbidden by law for the assayer to punch his mark if it didn't carry a maker's mark. The only exceptions was imported goods in valuable metals (gold and silver) that was brought to the assay office by the importer for the reason that it was also forbidden by law to sell unmarked silver and gold. Later an import mark was implemented.
There's a tiny hallmark on the rim of the jug. It's very small, I can't get a better picture of it. You say it's an import.
But then what does the "AЯ" mark stand for?
Please read what I wrote about the assayer. It is the assayer's punch that verifies legal silver purity. AЯ is the assayer Aleksandr Yashinov (the exception I mentioned in my answer). He is only verifying legal purity on imported goods.
Unfortunately I cannot identify the new mark you show. It could be a Russian maker's mark but as well a foreign maker's mark. You should have shoved it in your first message. It is of utmost importance that ALL marks are showed immediately. Otherwise it can lead to misunderstandings and incorrect answers. I should have written a RUSSIAN maker's mark, sorry.