Obverse: IMP CM Q TRAIANVS DECIVS AVG, cuirassed bust with radiate head right

Reverse: DACIA , Dacia standing left, holding draco standart

I have a couple of these silver coins celebrating the (re)conquest of Dacia, modern day Romania, under Trajan Decius.

Dacia had been invaded by the Carpi from the 230s and forward, until the Philip I sent Decius to deal with them around 245 AD. He finally stabilized the area around 248 AD, and his troops then acclaimed him emperor.

A short civil war ensued, Philip was killed near Verona in AD 249, and Decius was recognized by the Senate. He would rule for only a couple of years as he and his son were killed by Goths at the Battle of Abritus in 251 AD.

Dacia is holding a so-called Draco-standart, which was apparently a dragon-like battle-standard used by the Dacians. When they attacked on horseback, the flow of air would create a sort of frightening howl. Dacian horsemen were also used in the legions, and famously a company of Dacian horsemen with a Draco-standard were stationed in the UK close to Wales.

Some people believe that the legend of King Arthur the Dragon grew from these Dacian knights being the only law and order around after the Romans left. Who knows, maybe they inspired the Welsh dragon too.