If you don't have a camera with a macro lens, you will need to use a microscope of some kind. Here is an example using a stereomicroscope with zoom. Chris
I believe your fear is correct. Its a form of die deterioration combined with zinc rot, alot of cents from the 80's have that look.
Poomp! I guess its not very special. Im still waiting to find my most special coin. its my b-day next week, maybe on that week my luck will improve!