Different Prefix Letters

I received a $5.00 bill today at work, never looked at it until I went to enter it. I found different prefix letters on the bill from one side to the other. I posted a picture here. What is it worth?

maybe its a fake?? a lot of trouble to go through for a five though. And one would think if you are going to make a fake you would be more careful.

No antics it is real, the note I have has all the security features the same as other 5's. I have heard of them being faked before and it is usually altering a letter like an E removing the bottom to make it an F. If you click on the picture I posted you can zoom in and see it is definatly an A on the left and a C on the right. I did some searching on the internet and found this page. They show lots of serial # mistakes.

I think it looks amazing,
I'm so going to be looking for one of those!