LoL. Even though the dates are blurry, most seasoned "currency dudes" can immediately tell the dates just by looking at the signatures. Unfortunately, aside from the 1977 which looks to just be circulated, all have some kind of problems. They may be worth more than face value to the right collector but not by much.
Are the 1st and 3rd consecutive serial #'s its a bit hard to tell. That sure doesn't make them worth less!! I would think you could get more than $100 a piece if they are.
Yes, but unfortunately they have some writing on their backs. They're still pretty nice notes, though.
I keep stuff like those and earlier back to 1934 notes as reserve money for emergencies or coin shows.