All Metal and Highly Oxidized Coins

[dan_h]

I read this in the manual for my Garrett Stinger, that I occasionally use and the advice may be still relevant to current detectors. It said that heavily oxidized coins will be rejected by any level of discrimination and all metal searching must be used. I have an Indian head penny completed covered by patina and will use that to test my Stinger and newer detectors.

 

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[Ammoman]

Interesting, must be specific to the machine. Lots of Indians are found every day with oxidation of one sort or another.

 

[xr7ator]

I think the point is that if the coin is heavily oxidized or corroded, it will change the way the machine reacts to it and not give a perfect signal.

 

[luvsdux]

I've retrieved lots of zinc pennies that were in terribel shape and they all responded just fine with discrimination on.
luvsdux

 

[Jason in Enid]

I think the coin would have to be completely consumed by corrosion for this to occur. I have dug a lot of VERY heavily corroded coins from fertilized farm fields. They all rang up solidly, if maybe a little lower on the VDI scale but certainly nothing close to requiring an all metal mode to find them.