1977 Kennedy Half - Dark in color

[UnQle Rob]

Hello everyone, I was CRH last year and came across this Kennedy Half. The obverse and reverse are identical in tone (dark). Can anyone explain why or how this discoloration happens?

 

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[huntsman53]

Close-up pics of both the Obverse and Reverse, taken in natural light are needed to make any determination.


Frank

 

[cudamark]

As a general rule, abnormal coloring of a coin is an environmental issue. The coin probably came in continuous contact with something chemically acidic.....paper, plastic, cloth, liquids, etc.

 

[dejapooh]

It can also be caused by exposure to heat.

 

[huntsman53]

Or missing the Cladding or an improperly annealed planchet (i.e. sintered).


Frank