© Trustees of the British Museum
 Aureus - Trajan S P Q R OPTIMO PRINCIPI
| Gold | 7.1 g | 19 mm | 
|   Issuer   |  Rome › Roman Empire (27 BC - 395 AD) | 
|---|---|
|   Emperor   |  Trajan (Marcus Ulpius Traianus) (98-117) | 
|   Type   |  Standard circulation coin | 
|   Years   |  103-111 | 
|   Value   |  1 Aureus = 25 Denarii | 
|   Currency   |  Denarius, Reform of Augustus (27 BC – AD 215) | 
|   Composition   |  Gold | 
|   Weight   |  7.1 g | 
|   Diameter   |  19 mm | 
|   Shape   |  Round (irregular) | 
|   Technique   |  Hammered | 
|   Demonetized   |  Yes | 
|   Updated   |  2024-10-05 | 
|   Numista   |  N#253107 | 
|---|---|
|   Rarity index   |  100% | 
Reverse
Trajan standing in quadriga left, holding branch and sceptre.
Script: Latin
Lettering: S P Q R OPTIMO PRINCIPI
Unabridged legend: Senatus Populusque Romanus Optimo Principi
Translation: The senate and the Roman people to the best of princes
Comment
Mass varies: 7.01–7.26 g;Source: Online Coins of the Roman Empire (OCRE)
Interesting fact
One interesting fact about the Aureus - Trajan (S P Q R OPTIMO PRINCIPI) coin is that it features a portrait of Emperor Trajan on the obverse (front side), which was a common practice in Roman coinage to display the image of the ruling emperor. This coin, in particular, was minted during Trajan's reign from 103 to 111 AD, a time when the Roman Empire was at the height of its power and influence. The coin's reverse (back side) features the image of a personification of the Roman Senate, represented by a figure holding a scepter and a shield, symbolizing the Senate's authority and power. This design was a common motif in Roman coinage and served as a visual representation of the Roman state's ideals and values.