I Found Some Rare Ancient Notes In My House..........

Hello every body!.. the last week I was watching an episode of the Pawn Stars of hisory, about man who was to sell some ancient notes, and I remembered I had a collection that my grandfather had given me when I was a child, I look on the internet and apparently there are several that are very rare and valuable. The most valuable seems to be:





I have 2 this:


I have 6 of this:



Fist of all do you know if those are valuable?

I am totally newbie, I don't know if is recommended to grade/certify them, or where and how can I sell them, I found on internet that are many companies like PMG or CGC (http://www.gradedcurrency.com), that offer those kind of services. But I don't have an Idea..


Fernando