Roman Coin Legend Translator (Free Tool)

Roman Coin Legend Translator — Decode Ancient Coin Abbreviations Instantly

Ever picked up a Roman coin and wondered what all those cryptic letters mean? You're looking at a Latin inscription called a legend, and it's packed with information — the emperor's name, his titles, the year of his reign, military victories, and even religious offices. Our free Roman Coin Legend Translator decodes the most common Roman coin abbreviations in seconds, so you can confidently read what's on your coin.

What is a Roman coin legend?

A legend is the circular text around the portrait on a Roman coin. Because space on a coin is tight, Roman mints abbreviated almost everything. A typical obverse legend like IMP CAESAR TRAIAN AVG GERM PM TR P COS V PP is actually a full titular formula meaning "Imperator Caesar Trajan Augustus, conqueror of the Germans, Chief Priest, holder of the Tribunician Power, Consul for the fifth time, Father of the Country." Reading these abbreviations is one of the first skills every ancient coin collector learns.

Common Roman coin abbreviations

IMP — Imperator, meaning commander or victorious general, later a standard imperial title.

AVG (or AVGVSTVS) — Augustus, the supreme title for a reigning emperor.
CAESAR — originally a family name of Julius Caesar, later the title for the heir apparent.

PM (PONT MAX) — Pontifex Maximus, the chief priest of Rome.
TR P — Tribunicia Potestate, the tribune power, often numbered to indicate the year of reign.

COS — Consul, Rome's highest elected office; roman numerals after it show how many times the emperor held it.

PP — Pater Patriae, Father of the Country, an honorific title.

SC — Senatus Consulto, "by decree of the Senate," typically found on bronze coins.

GERM / DAC / PARTH / BRIT — victory titles: Germanicus, Dacicus, Parthicus, Britannicus.

Why this matters for collectors

Understanding Roman coin legends helps you identify, date, and authenticate coins. If you know an emperor's reign and the year they first held a particular title, the legend can narrow down the mint date to within a single year. It also helps spot forgeries — fake coins often get titles wrong or use impossible combinations.

Start with the tool below to translate any legend you come across. For authentic Roman coins ready for your collection, browse our Shop, dive into the Ancient Coin Hour for collector interviews, or read more beginner guides in the Kinzer Legacy.