Great Finds! That Error looks pretty major. You should post that in the "COINS" section of this forum, alot of knowledgeable people on there. I thought I was seeing things when I saw that..lol
Sweet silver dude what numbers did it hit and how deep was it I bet it was a weak signal sounds like a great spot keep at it
I think I can see the R on part of the blob, and maybe the bottom of the M on the ridge? Im dying to hear what the coin experts say about this and how many million of dollars this is worth lol!
possible to see a photo of the back of pendent/amulet. ?
Almost looks like they are wearing medieval style clothing though. Maybe sat in some sort of frame at one point due to the edge around the outside Looks like a house or building down towards ladies elbow. Appears to be plated with copper base. No rings, loops or hooks that would of been needed if it was on a chain or necklace.
Does look crudely made, I figure mid 1800 just like most everything else from this site. No marks or stamps on back from what I can see. Any thoughts?

The E stamped on the blob is the E in America no? You just may have a really rare coin there. I see nothing about errors for that coin in my coin book.
Definitely do some research on that one for sure. Congratulations on that and all your super finds.
Please do and post what they say! And obviously dont sell to the first bidder!