Agreed its a (vise) jobthe reverse is completely roached from the pressure applied when the coins were jammed together,still a cent.Also I don't think capped dies can be rotated like this. http://www.error-ref.com/struck_through_a_late_stage_die_cap/
Already answered . . . a vice job, and poorly done at that. Understanding the minting process can go a long way in figuring out whether something like this is an error, or just PMD.
Yes the tool used to clamp things together is a vise. Vice is a bad habit and those 2 words are not interchangeable. Signed Spelling Police