After about 20 hours on land, all in old parks, here is the update. Probably 20 wheaties, indian head, v nickel, and one 10K class ring, old. Dug almost every target, lot lot lot of work. At least 500 caps and pu;; tabs and slaw. My overall impression is that you will find gold, with alot of digging. For old coins in parks with a ton of targets, this is not the machine. No silver, but will keep plugging away for now as I think it does great for gold. Also, put the ring next to 3 different bottle caps and pull tabs, closed my eyes and swung. I never could have identified that ring by tone, 2 of the caps sounded off exactly the same. Des in Buffalo