Welcome.
Sorry, the forum had some technical issues over the last few days and folks are just now catching up. Nothing jumps out at me as being especially valuable but the postal history aspect of the material is interesting to some folks. Keep in mind that most stamp were printed in huge quantities, many were produced in the billions. There are some much less common varieties and stamp collectors enjoy hunting for them. But this is about the same a rock collector hunting for a diamond, chances are better at winning a mega-lottery than stumbling upon something really rare.
Stamp collecting and postal history are great hobbies. If you would like to learn more about the hobby you can search this forum or try Stamp Smarter website here
http://stampsmarter.com/Don