New pennies, Zink core. Dimes, quarters, halves, dollars?? I'm assuming all have the same material in the core. Given that, our detector reading related to size of the core. Again an assumption is it's a bronze component. That assumption based on copper pennies reading in the silver range. Must not contain much nickel as that range very low in comparison.
I dig a lot of "reds", no silver remaining due to fertilizer or something in the soil. Reading is still within a point.
I dig a lot of "reds", no silver remaining due to fertilizer or something in the soil. Reading is still within a point.