Jason in Enid
Elite Member
Not all silver coins are high conductors, so you may have left stuff behind for the next guy, but even so, a detector has no idea what the metal is it's reporting on.
I have to say though, I've never seen a coin on edge dug at the depth you say, but i seen many fall back in the hole and appear on edge at depth.
I think coin depth is like fish size. The older the story, the bigger it gets!