A very interesting video!
A problem, however. The legend of Nero's MAC AVG dupondii is traditionally expanded Macellum Augusti, "the emperor's marketplace". The video wants to revive a different idea, which had been mentioned but dismissed by Mattingly in BMC, p. clxxix: the type shows the dining room of Nero's Golden House, and the legend should be expanded to Machina Augusti, referring to the movable roof. However, an undoubtedly genuine dupondius of Nero formerly in Naples, probably the same coin as NAC 45, 2008, lot 91, writes out the legend in question: not MACHINA AVGVSTI, but MACELLVS AVGVSTI !