Rescued from my junk bag and winning no prizes in the beauty contest (devastated on the obverse by corrosion, sadly) I think this is an interesting building reverse.
The coin is one of Trajan, Tomis (modern Constanța, Romania) in Moesia Inferior, AE 20mm, RPC 779. It shows why the RPC physical books are so valuable compared to the website listing. The "trophy on pedestal", paraphrased from their website, is described fuller in the book text where they suggest the reverse is actually the memorial at Adamklissi, the Tropaeum Traiani, recording the first victory of Trajan over Decebalus.
The circular monument, topped with a sculptural trophy of arms (now preserved in the museum) at Adamklissi, was restored in the late 1970s. The coin would seem to show the detail of the top of the structure.
The location of Adamklissi is in the hinterland of Tomis and so the memorial would be familiar to the residents of the city. The coin type may have served as a warning to those with a mind set on further unrest. As it turns out, that was an unsuccessful ambition.
Around the base there are a series of 54 vignettes or metopes, not wholly unlike the sciences on its more famous counterpart Trajan’s Column in Rome.
