Looks to be a small Die Break. The Die itself had a break or a Chip on it so the metal from the Blank Nickel Planchet flowed into it. It's a common occurrence that could be found in different areas of the field. If it is near the edge of the coin it's called a CUD.
I don't know about the nickel but we have ice cycles here in south central Pennsylvania. 10 degrees this morning and it goes right though you. BRRRR
icicle: Definition of icicle 1 : a pendent mass of ice formed by the freezing of dripping water 2 : an emotionally cold person 3 : a long narrow strip (as of foil) used to decorate a Christmas tree Ice Cycles From Wikipedia, the free encyclopedia Jump to: navigation, search This article is about the second album by Platypus. For bicycles designed to ride on ice, see ice cycle.
I want to ride my ice cycle! Ice cycle! Ice cycle! ! P.S all my ex's are #2 in more ways than just that definition.