Found this Spanish pillar dollar today in the ocean. (Edit: I initially thought it to be too light to be genuine, weighing in at only 16.5 grams, but as many T-net users have pointed out, being exposed to salt water for 200+ years corrodes silver, and I can confirm the coin is much thinner than...
My dad had me look at this today. I told him I would try to find something out about this. I hope you can see it well, it measures 8.5 inches against the ruler. It has horizontal ridges cut into it below the head (but not on all sides, just one I think) and some at the tip.I saw one very similar...