Hodge Podge Of Stamps I Need Help Identifying (Part 3)

Thanks for all the help with identifying stamps. Here are a few more...

hi, The fifth stamp on top is a Czech revenue stamp..!
http://www.mydfz.com/Cats%20on%20Cz...20Stamps.htm

Row 4 stamp 4 - un-authorized private Upper Silesia plebiscite labels

4th Row, Stamp 2

Montenegro
Royal Mausoleum Set,

TIP: Keep a tiny notebook, and jot down "identifiers" when members here, solve your query.

Example: HOBY = Montenegro (The currency) but it will guide you next time you see a stamp of this nature.
Further, KuK Feldpost = can be Austria, HRVATSKA = Croatia
SPENJA = Serbia, and so on.

Bottom Row..Last Stamp.
Bohemia and Moravia

1. Russia - Socialist Federal Soviet Republic (1921)
2. Spain - War tax stamp (1877)
3. Slovenia - Yugoslavia
4. Croatia - Yugoslavia
5. Czechoslovakia - Revenue stamp
6. Turkey
7. Austria - Postage due
8. Saxony - Germany Russian Zone (1946)
9. Bulgaria
10. Bosnia & Herzegovina (1917)
11. Serbia (1900)
12. Bulgaria
13. Montenegro
14. Austro-Hungarian Military Post - Newspaper stamp
15. Bulgaria
16. Bulgaria
17. Montenegro
18. Serbia (1911)
19. Upper Silesia - privately issued by Polish insurgents (1921)
20. France
21. Austria
22. Burma - Official stamp o/print
23. Croatia
24. Republic of China [Taiwan] (1957)
25. Bohemia & Moravia