Military Payment Certificate (MPC) Rare Series 521 1 Dollar Fr-M845 Grades vf+. One really neat thing about series 521 military payment certificates is that they were the first issue to have the denomination of each note printed on the reverse. All previous issues just had a standard generic design on the backs. This also marked the first time that Forbes Lithograph Corporation was responsible for the entire printing. Forbes incorporated “real people” into the designs of the one, five, and ten dollar denominations instead of the previous classically inspired designs. Series 521 MPCs were used in 19 different countries between May 25th, 1954 and May 27th, 1958.