Heres the story of what indicates a cashe of wheats by reason of close proximaty of dates 1910-1930 and being found in a small area of a farmers field.Pat and I found the location of an old house by researching old maps which no longer exists.I had not recieved my CF77 as of yet so I was hunting with my Etrac was hitting targets about 9 inches.As soon as the CF77 arrived headed back out to the same location,and it was not long before recieving a faint signal another wheat 12 inches down then went on to find three more wheats,and Patm found three with his Cores.Depth was impressive but how would it discriminate took it to a loacal park where coins have been found from the 1800s.Here we go again shotgun metal 10-12 down after a few of those targets wanted to turn sensitivity down so I did still went deep lol.I dug some signals that had a two way signal but was breaking up one way ended up being foil on one target and a small beaver tail tab on the other,then proceeded to dig a 1940s wheat 9-10 inches.After dinner decided to hunt an 1885 church camp that has been hunted hard by me and many others if you find a coin here at 3 inches or below will likely be an old coin.As it was getting dark I thought to myself it would be nice to find a silver or an indian to write about ,up comes a nice two way faint signal down about five inches on the side of the hole laying vertical not another wheaty no this is an indian.To dark to see the date after clean up revealed a 1883 indian head penny.My final thoughts in regards to the CF77 is I got more than I bargained for a better discriminator than expected listen for that saxy sound on deep targets,,,,,,,CEDAR