Found this 1857 Seated Quarter today at a permission site. I attended Andy Sabisch's Minelab Bootcamp in 2017 here in Michigan and the class definitely paid off. I use Andy's pattern and also purchased the 8x6 Detech coil from him. The quarter was down ten inches and the E-TRAC pretty much locked onto a "46" for the Conductive number but the Ferrous number jumped from "12" all the up to "22" just as Andy said it would with a coin that deep.
Thanks Andy and Charlene for a great day of learning the E-TRAC!
Thanks Andy and Charlene for a great day of learning the E-TRAC!