Some more explanatory notes:
M9 and M10 seems to my eyes Maranao blades. And agree with Barry that M10 that it is a very nice original kris with the anting anting cloth.
M11 isn't a kris and Barry may be correct that it is a Visayan blade. (look also this thread:
http://www.vikingsword.com/vb/showthread.php?t=14751)
M33 don't have a seperate gangya and is IMHO a WWII area kris with a typical sheath from this time.
M34 is IMHO a Maguindanao blade.
Regards,
Detlef