Help Me One More Time

I picked some beautiful stamps, at least pne of them worth anything or just trash?
I think theyre from belgium, germany, france and nicaragua
http://i1383.photobucket.com/albums...8337c35d.jpg

From left to right. Numbers from Scott catalogue.
Top row:
Nicaragua - looks like Scott 518.
Mexico - 156 or 231 (very unlikely) depending on whether watermarked or not.
Belgium Q157
Germany - 146 or 172 depending on watermark.
Second Row:
Nicaragua -needs better scan.
France - 113.
Belgium - Q28.
Third Row:
Nicaragua - 636.
France 76 or 84.
Belgium Q134 and Q144.
last row:
Belgium Q316
Yugoslavia? - needs better scan
Yugoslavia - 1L26.

Mexico stamp maybe something to look into. Check for watermark, perforation, paper type.

Check out this site http://www.stampworld.com/en_US/maps/Europe/? may be helpful.

That was incredibly nice of you to take the time to look up all those stamps. I think you should get a nice person of the day award!