5 Cents Military Payment Certificate

Military Payment Certificates were issued to U.S. service personnel stationed overseas as a tool to control black market currency operations — converting local economies running on dollars into ones running on scrip that could be called in and replaced overnight. Series 541, to which this note belongs, was introduced in 1958 and remained in circulation until May 1961, when it was abruptly replaced by Series 591 in a single-day conversion exercise designed to strand anyone holding MPC illegally.

Those conversion days — "C-Days" — were conducted without advance notice, often over a matter of hours, leaving black marketeers and unauthorized holders with worthless paper by nightfall.