Amazing coins! Wow, you have found iron knives, spear points, and arrowheads? I'm guessing that means that you have dug in/around what must have once been a
military camp? I would love to see the arrowheads, knives, and spearpoints if you have a picture.
Military artifacts are one of the things I love most about collecting artifacts (even though I don't really have any, I love looking at them and researching!).
Andrew