"so what ur saying is corrosion brings out an image on the penny" No, no more than mold on a masterpiece painting is considered an improvement of the painting even if it looks like a man or an increase in value no matter what its shape. It is pareidolia. Pareidolia is a type of apophenia, which is a more generalized term for seeing patterns in random data. Some common examples are seeing a likeness of Jesus in the clouds or an image of a man on the surface of the moon. (wikipedia). Jim