I tried out the small coil yesterday on the Vista X. The area that I hunted was blanketed with iron. In an area, approximately 10' x 10', I was able to pull out these 3 targets. The center coin is a 1907 IH, the left is an aluminum token and the one on the right could be similar but a different product. (Aluminum tokens didn't come out until the mid-1890's, so these could be in the neighborhood of a 100 years old.) I had to work the area slow and any hint of a high tone, I investigated thoroughly. I did dig one pulltab but you have to, to get the goodies... Thanks Richard