While doing research on a an old one-room school house that once stood in a field, I noticed on the map that there had been a township hall in another field nearby. After a quick scouting trip, I saw that the town hall field had been planted in wheat and it had been harvested. So after stopping at a nearby farm, I found the owners of the field and secured permission to hunt it. The following morning I unloaded my gear and immediately found out the area was just loaded with iron nails other pieces of iron junk and that the nearby huge electric towers made my normal detector of choice unusable.
Then I thought, why not try my Minelab 505 which I had just recently bought as a backup machine. It worked incredibly well in a very tough environment and I found one seated liberty dime, a V- nickel and 5 Indian head pennies are about 3 hours of detecting. The next morning I felt I might have an hour or so to hunt while my wife was getting ready for an afternoon trip, so I went back and expanded the area I had hunted the previous day. All I found was few shell casings and a few pieces of can slaw, so I began to work my way back to the car when I got a solid penny signal. After pulling out 2 rusty square nails and another odd piece of iron, out popped a green Indian head penny. I thought, at least I didn't get skunked and stuck it in my pocket and headed home. When I got home, my wife was nearly ready so I rinsed it off and looked at coin and saw 1877. Not trusting my eyes, which are not very good, I casually asked her what she saw and when she said 1877,I broke into my happy dance. Thank you Minelab for my new primary field machine!
Herm - OH, USA.