Russian stamp cut-outs from original documents

a collection of my cut-outs from Russia

Here are some cut-outs from my collection from Russia I'm looking for additional information. if you can help me please let me know.
and what is a cut-out?: cut-out is an imprinted stamp cut from an item of postal stationery such as a postal card, letter sheet, aerogramme or wrapper that may have been used as a normal stamp.

cut-out 1-9

cut-out 2-9

cut-out 3-9

Revenue paper Alexander II (1855-1881)

cut-out 4-9

cut-out 5-9

Proportional Tax Paper Alexander II (1855-1881) Fat Eagle

cut-out 6-9

Proportional Tax Paper Alexander II (1855-1881) Fat Eagle

cut-out 7-9

Proportional Tax Paper Alexander II (1855-1881) Fat Eagle

cut-out 8-9

cut-out 9-9

Proportional Tax Paper Nicolas I (1825-1855) Wide wings Eagle