I finally hit an old one with the 70. I went to a field where I have found a few coppers and a cross reale and I thought it was done for. I picked up this thin copper, possibly a half-cent and had to resort to wet/dry paper to try to get some detail on it. Pretty typical of probably half the coppers we find up here in NH but I was excited as it was the first oldie in 3 trips out. Tech. info... VDI = 34/36, Sens 26, Auto GB and All Metal mode, stock coil, 6" deep. Ron