OK, second day out with my E-Trac, second silver! I went back to the park I found the medallion at. Things seemed to go a liitle smoother. I gave up on several solid targets that indicated as being about 2-3 inches deep. Then I got a solid 12-42 that showed 5 inches. At 5 inches I had nothing. I kept going. Finally, at about 8-9 inches I pulled a crumpled piece of metal out. It wasn't very big, but it's deeper than any other coin sized target I've dug. It was a loud and clear signal too. After this I started to feel better about the machine, but wondering if I could attach my E-Trac to a self-powered auger. Then I got another identical signal, and pulled a coin from 5 inches. I thought it was a penny. I couldn't see anything on it. it was crusty, corroded, and even had rust in the corrosion. I finally picked at it enough to see a reeded edge!! It's currently soaking. It has to be the ugliest silver coin ever. I don't even know if I will be able to see what it is. I THINK it's a Merc because there is a raised line in the middle of one side. I also found two coppers in equal condition, but I can't tell anything about them yet.
I'll post pics when I get them cleaned up a bit more.
I need to go back and start gridding this park.