Does ANY of the zinc pennies break over (up grade) from the mid tone into hi tone?----Zincs (normally) come in at 75 and that's right on the line (break point) between mid & hi tone, right?-------Also, is the AT PRO doing well (depth wise) on the west coast as a coin hunter in the more mineralized ground?
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Couple of questions on the AT PRO
- Thread starter D&P-OR
- Start date
quarterhorse
New member
The mid 1982's and newer zincolns VID 75 to 76 on my machine, and are audible as high tone in Pro mode zero, sensitivity maxed out, the ones dying of coin cancer dart around 74-77 if they are shallow or surface finds, but I get high tones. I dug 183 of them today as a test on the Sniper Coil 
The older 95%copper 5% zinc memorials pretty much peg my machine's meter at a steady 80, dimes 81-82, and quarters run the scale of 85-87
The older 95%copper 5% zinc memorials pretty much peg my machine's meter at a steady 80, dimes 81-82, and quarters run the scale of 85-87