Was giving the Orx a run today and came across a jump signal 40's and an occasional low 70's. Iron probability was 0 and I knew it was trash but dug it out of curiosity. It turned out to be the bottom of an old tinned can that is all rusted. When I layed the can end flat out the Orx could not detect it in any of the coin modes and it would sound off in the gold modes but give no number. Tested the can end when i got back home. AT Pro gave a solid grunt and low numbers, Multi Kruzer was spot