1998 D Red Nickel

Can someone tell me about what they think is the reason this coin is red. Through microscope you see blotches of black also.

 

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Welcome new Member !! I'm an avid Metal detectorist and I've dug many of these . I'm going with PMD or post mint damage .

 

Yup, acids and other chemicals in the dirt will then coins all sorts of wonky colors

 

Thankyou

 

Thankyou

 

Nickels are made of Cupro-Nickel.
75% Copper and 25% Nickel.
When exposed to a harsh environment for a long period of time the Copper is affected and tones a darker color. Soil, dirt, sand, water and chemicals will do this..
Here are my metal detected examples.

Same goes for clad coins. Also Cupro-Nickel.

 

Dang your Nickel is identical to mine. Well there we go.