Abbreviation | Definition |
---|---|
NTC | Numistrust Corporation |
O | New Orleans, Louisiana (mint mark on US coins) |
O# | Overton Number |
OMM | Over Mintmark |
P | Philadelphia, Pennsylvania (mint mark on United States coins) |
PCCB | Professional Coin Collection Box |
PCCS | Pocket Coin Cylinder Social |
PCGS | Professional Coin Grading Service |
PCGS | Professional Coin Grading Services |
PCI | Photo-Certified Coin Institute |
PCO | Pre coin offering |
PCO | Ptolemaic Coins Online |
PF | Proof |
PL | Proof Like |
PM | Precious Metal |
PNG | Professional Numismatists Guild |
PP | Polierte Platte (German: Proof coin) |
PQ | Premium Quality |
Pr | Poor |
PR | Prachtig (Netherlands coin grade equivalent to Extremely Fine) |