Hello to all
I found an album with stamps after my great-grandfather and I would describe them according to the catalog, priced and are likely to sell. Unless I catch the bug 
I have some problems related to the identification stamps.
Generally in the Michel catalog I was able to find the numbers, the problem is an additional sign - serrations, etc..
Could I ask for help in a more precise identification of the stamps.
Holland
Mi No 7
Mi No 21 Mi No 22
Mi No 30
Mi No 33
France
Mi No 293
Mi No 255
Mi No 27 Mi No 28
Mi No 37
Please reply in which Michel catalog can I find stamps from the German colonies?
Thank you in advance for your help