Russian silver query

[Caltha]

Any information would be appreciated bought  this in Tallin 

[sixgun]

84 (%) is a common silver finest. The 84 mark is in a combined finest and town assay mark. The town mark isn't clear to me.

The other mark will be the maker of the piece but i don't know what that is. i suspect if that could be discovered the town of assay would fall into place as well.

[CollectForFun]

To be precise, 84 (zolotniks) means 875/1000 silver fineness.

The town mark is hard to decipher but perhaps it may be Moscow - St. George on the horse?

No "kokoshnik" (face) mark would mean the item is from before 1896 marking reform.

And finally, "KF" is an intriguing maker's mark because it was used by none other than Karl Fabergé - most known for his famous Faberge eggs.

 

But, just keep in mind that his mark would probably be also the most copied one. I am no expert on his work and have no idea if this ring is genuine. The symbol of a double-headed eagle on a cross is used on many various items in Russia and maybe it even has some meaning to it (but this I'm just guessing).