A bindery (trimming/cutting) defect that results in a series of chips and tears at the top, bottom, and right edges of the cover, caused when the cutting blade of an industrial paper trimmer becomes dull. It was dubbed Marvel Chipping because it can be found quite often on Marvel comics from the late ‘50s and early ‘60s but can also occur with any company’s comic books from the late 1940s through the middle 1960s.

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