Obverse Legend
IMP
Imperator — Supreme military commander
CAES
Caesar — Imperial dynastic title
NER
Nerva — Adopted name from his predecessor, Emperor Nerva
TRAIANO
Trajan — the emperor's personal name
OPTIMO
Optimus — "The Best" — a unique honour granted by the Senate
AVG
Augustus — "The Revered One"
GER
Germanicus — Conqueror of the Germans
DAC
Dacicus — Conqueror of Dacia (modern Romania)
Reverse Legend
P M
Pontifex Maximus — Chief priest of Roman religion
TR P
Tribunicia Potestas — Holder of tribunician power
COS VI
Consul VI — Consul for the sixth time (helps date the coin)
P P
Pater Patriae — Father of the Fatherland
S P Q R
Senatus Populusque Romanus — "The Senate and People of Rome"
Reverse Image
Trajan's Column — the famous 30-metre victory monument, still standing in Rome today. Dedicated c. AD 113 to celebrate the Dacian Wars. Surmounted with a statue of the emperor; base ornamented by two eagles and bas-reliefs on the pedestal.