I suppose the question depends on what you would consider a sestertius. I have often seen asses of Aurelian and Severina labelled as "reduced sestertii", but I'm not so sure whether they are in fact sestertii. From my understanding, the question is up for debate. Here's my example of Severina, which weighs 7.79 grams. Also, very clever @Cucumbor ! @Julius Germanicus Wow! A sestertius of Salonina is not something you see every day!
This one of Trajan Decius is only 15.11 g: Trajan Decius AD 249-251. Roman Æ sestertius, 15.11 g, 29.4 mm, 1 h. Rome, AD 250. Obv: IMP CMQ TRAIANVS DECIVS AVG, laureate and cuirassed bust right. Rev: PANNONIAE S C, the two Pannoniae standing left and right; each raising right hand; the one on the right holds a standard in her left hand and there is a vertical standard behind the one on the left. Refs: RIC 124a; Cohen 87; Sear 9407; Hunter 54.