So cool, good research. Thank you. We have detected on and off for years, mostly off due to busy family life and schedules. A few years back we found a 1813 military button on a hill near Stanton. A 1900 Quarter in a backyard near 44th and Randolph in Lincoln. (Using an inexpensive Fisher). Looks like alot to learn with the Etrac, but once you get it mastered pretty well, what a nice machine. I am going to order through Kelly. Keep the videos coming!