@nobile03, best practice is to start a new thread for each of the coins about which you are asking questions. It helps us when we use the search functionality of this website. No big deal, but just helping you learn.
Your '56 has a very strong RPM, but I agree that the other two mintmarks aren't repunched. The website variety vista is super-helpful with these if you'd like to research them. Of course don't forget to post them here as we love seeing them.
"The danger we all now face is distinguishing between what is authentic and what is performed."