Great coin, Ancient Aussie. Very appealing. Combines a pleasant bust of a historically significant emperor, an interesting architectural reverse (which I know you appreciate very much), and a pleasant patina. I do not have any architectural types for Septimius Severus. They tend to be quite scarce. However, this sestertius with Victoria reverse appeals to me due to its attractive portrait.
IMO this sestertius has a lot going for it besides the excellent portrait. Septimius sestertii often lack the full legends and even strike seen here. This is a nice coin.