Russian Coin #2 [opgelost]

Please identify this for me, provide opinion of authenticity, and opinion of approximate value. No data available. All I have are these photos. Thanks.

Nothing left to identify. Based on shape highly worn wire kopeck or denga (half kopeck). But could be just thick lump of silver or not pre 1700 Russian empire/czardom/duchy. Second image does not look like St.George (rider with spear). Might be something early. Shadows on images show that it is thicker than other two.

Source for wire kopecks below.

https://kyiv2014.com/copeck/index.html or https://web.archive.org/web/20250000000000*/http://silver-copeck.ru 

Collecting wire kopecks would take this addiction to next level.

Thank you for your time and effort. No, I dont plan on starting yet another type collection as I am already stretched very thin and collect far too many type coins already.  I have an opportunity to aquire the 3 Russian coins I asked about on this board. I find them interesting and would not mind aquiring just the 3 to have a few examples of these old Russian type coins in my collection. Thanks again.

Bump: Estimated values, even a guess on the 3 Russian coins please? I may start bidding on them. Thanks.