Well I went back to XXX place where I found the 1781 and the 1797 silver reales?? There was some bulldozer work on the grounds where I had previously looked. I thought this would bring up some old coins. It did. I found a civil war button, a 1895 indian head and what looks like a 1779 reale. The area I searched was about 20 by 40 feet. Easy digging. I also got another signal in another area 00-28 well i dug down about 12 inches and nothing. The signal is still there and my digger wont dig any further. Will this machine really pick up coins that deep? I have a Ground Shark shovel on the way. If someone thinks you can use a screwdriver to dig up coins from this Explorer they must be crazy. Never have I found coins as deep as this. Where can I find info on Spanish reales? Thanks and HH