Æ23 - Trebonianus Gallus COL AVG TROAD

Alexandria Troas operated with unusual autonomy among provincial mints, retaining its colonial status — and the right to strike bronze coinage — long after many comparable cities had lost theirs. The city held COL AVG designation as a Roman colony, a privilege reinforced under Augustus and never revoked, which explains the unbroken local coinage tradition running through even the turbulent third century.

Trebonianus Gallus came to power after the death of Decius at the Battle of Abrittus in 251, a campaign gone badly enough that some ancient sources accused Gallus himself of arranging the disaster. His reign lasted barely two years before his own troops turned on him.