Collection of old Russian Empire coins

Hey guys, I am new here and to the whole coin business.
I have received a collection of 12 coins, which I am trying to trace back and identify. I have used some other sources, but the coins there only party match my collections, so I was wondering if you can help me out a bit.

Here are the photos on Flickr

https://flic.kr/p/wkQWDv
https://flic.kr/p/wkQWr6

I would be grateful for all your knowledge shared about their value, condition, rarity and so on.

They all seem to be kopeks from  the russian empire/siberia ... look around here
https://en.numista.com/catalogue/russia-empire-1.html#devise263

8, 9, 10, 11 and 12 look a bit strange on the back but the front is ok, have you weighted them?

#1 mint KM : Kolyvan
1777
Catharine II (Ekatharina)
monogram of Catharine II
МОНЕТА СИБИРСКАЯ : Siberian money
ДЕСЯТЬ КОПЬЕКЪ : ten kopeks
https://en.numista.com/catalogue/pieces17970.html

#4 idem, but:
пять КОПЬЕКЪ : five kopeks
https://en.numista.com/catalogue/pieces17968.html

#2: this one?
https://en.numista.com/catalogue/pieces63979.html

#3 :
mint EM: Ekaterinburg
https://en.numista.com/catalogue/pieces27218.html
but the date does not fit

#5:
https://en.numista.com/catalogue/pieces15879.html

#6:
ПѦТЬ КОПѢЕКЪ : 5 kopeks
https://en.numista.com/catalogue/pieces26892.html

7, 8: novodels
четыре : four
https://en.numista.com/catalogue/pieces39444.html

9: mint St Petersburg (СПБ : SPB)
3 kopeks
Nicolas I
Could not find that date (fake?)

10:
2 kopeks 1802 EM
mint: EM: Ekaterinburg
https://en.numista.com/catalogue/pieces26896.html

11, 12: 2 kopeks
propably fakes, the details are to crude

nice collection!
Corrections welcome

1 and 4 have the Siberian coat of arms. I agree that some look a little dubious to me.