It is obvious that Mark Anthony is circumcised in his scene with Vorenus. This would not be the case. Only Jews and some Egyptians would be circumcised in this era.
At 27:30 Caesar states "I believe that religion is the province of our worthy priests. Mere soldiers like myself best not interfere." In truth, Julius Caesar was the Pontifex Maximus of Rome at this time; in essence, the chief priest of Rome's religion. The augurs, of which Caesar is speaking at the time, would have been, at least nominally, under his control.
The amount of Treasury gold would be far too heavy for one cart, and also too heavy for Pullo alone to remove and bury in any reasonable amount of time.
Octavia quotes Virgil's lines from his epic poem Aeneid: "Easy it is to go down into Hell, the gates of death are ever open; to climb back out again, that is the difficulty." Virgil did not start writing the Aeneid until about 29 BC, 20 years after the setting of this episode.
Veronus is introduced to a man who sells fire insurance, among other things. There is no record of property insurance in Roman times or indeed any time before the 17th Century A.D.