@jelly, sorry but I'm only seeing normal-to-heavy wear and tear on your quarters. The starting weight was about 5.7g, so it seems like your first quarter is a little low. How accurate is your scale--maybe it is at least partly measurement error? The spotting on the '82 obv could be from chemical or environmental exposure. Hopefully, someone else will weigh in and tell you that you have found two gems, but right now I don't see any reason not to spend these two coins.
"The danger we all now face is distinguishing between what is authentic and what is performed."