Answer: overprint

AnswerCrossword Clue
OVERPRINTPostage mark, sometimes
overprinta. any word, inscription, or device written or printed on the face of a stamp that alters, limits, or describes its use, place of issue, or character b. stamp so marked
overprintto print additional material or another color on a form or sheet previously printed
overprintto print over something already printed
overprintquantity of printing in excess of that desired; overrun