Military Payment Certificate. Series 661. $10. PCGS Currency Superb Gem New 68 PPQ. Tied for Top Pop at both grading services. An utterly superb example of this much better high denomination MPC that displays all the attributes one would expect at this lofty grade level. The other PCGS Superb Gem New 68PPQ that we have seen sell at auction topped the $2,000 figure several years ago. We have sold two gems previously; a PMG Gem Unc 66 EPQ that sold for $1,380 in 2018 and a PMG Gem Unc 65 EPQ that realized over $1,100 in our 2016 ANA sale.