You might of seen my cellar hole post of 7/18. The first coin (unidentified) in the bottom row was heavier and thicker than the large cents. Well if you use your imagination you can see as identified, Victoria Dei Gratia coin. The image on the left is Britannia sitting with a shield, (looks like a wheel chair wheel) and arm hardly visible holding a spear. The image on the right is Victorias head facing left. If you look for the Gratia on the right edge and follow it under the neck you will read 185?. I think it is 1856. Anyway that was, along with the large cents, a first for me. That was with the F4. I will post a nice ring I found with the F4 shortly. I went out locally today for the first time with the new F70, getting acquainted with its beeps , etc. As I am reading here on the forum and am trying, tweaking the threshold, sensitivity etc really does seem to make a difference in stabilizing it. From what Im hearing in my phones, I think Im going to like this machine a lot. Good hunting.