Titus, As Augustus AR Denarius - Upgrade

Finally found a Titus Augustus denarius with full legends, solid details, and a good portrait, all at a price I could swallow.

Titus, as Augustus 79-81
IMP TITVS CAES VESPASIAN AVG PM - Laureate head right
TR P VIIII IMP XIIII COS VII Radiate figure (Sol?) standing on rostral column, holding spear.
Rome mint, July-September(?) 79
RIC 10




I'd be curious to know if this coin's reverse depicts some allegorical scene, or an actual monument that has been lost to time - online descriptions seem pretty vague.

As for the dating, here is a positively fascinating article relating to arguably the most important and remembered incident during his short reign, the eruption of Mount Vesuvius:

https://www.google.com/amp/s/gareth...ulaneum/amp/

According to the article, among the possessions buried with the victims that day was a single, freshly-minted Titus denarius citing IMP XV, a title, the author argues, Titus did not have on August 24 of 79.