First one is from Montenegro. Second one is a Russian stamp used in Finland (Bjorneborg is the Swedish name for the Finnish town Pori). The other ones are Russian back of book: civil war period.
The Montenegro stamp was produced by the royal government in exile so I guess it was basically a propaganda label.
The Finnish stamp is very similar in style to the usual Russian imperial stamps of the time but it has the Finnish "1 MARKKA" face value.
For the Civil War issues, Scott lists the red stamp under Siberia, and the other two under the Far Eastern Republic (at least they did in my old edition!)
I stand corrected as far as the Finnish stamp is concerned. To my defence I can say that I wrote my earlier message on my phone. Small screen
Regarding the Montenegro stamp, I think Nigel is right. Not a proper stamp in the sense that it was officially issued and ever used for postage.
