Not sure if this is the right section to post this, but here it goes. I found an interesting penny the other day, a 1960 P US Cent. It's a light golden color, something I've never seen before.
You can find pictures of it here, compared with other pennies. If it's just a random color that I haven't seen before, okay, but if not, what does it mean? Any help would be appreciated.
Copper is a highly reactive element. It will readily combine with other substances such as Oxygen, Chlorine, Florine, Carbon Dioxide, Hydrogen Sulfate other wise known as Sulfuric Acid and many other acids. As it combines with different substances it changes in color and apearance. Occationally some cents look excessively shinny. That too is caused by many things. One thing is at some shows people use cents (pennies) as a demonstration on how metal polishes work. Yours is just one of the many situations that change a coin.