Actually, the 1956 cent shown was damaged by a counting machine. It damaged the 6 then subsequent wear and toning made the 6 look weak.
I don't remember any such name for a '56 cent. There is something called a Poorman's doubled die on the 1955 cents. Of course, they are not doubled dies at all.
Maybe Chuck has heard something about the 1956 that I never heard. Just keep in muind that when a coin is hyped for whatever reason, people can come up with all kinds of descriptive names for something that really isn't anything too out of the ordinary.