Conservation
PMG / PCGS
PMG / PCGS
The two leading third-party paper-money grading services: Paper Money Guaranty (PMG) and PCGS Banknote. They encapsulate the note and assign a numerical grade from 1 to 70, aligned with the Sheldon scale.
See also: Sheldon Scale , EPQ (Exceptional Paper Quality) , Uncirculated (UNC)