Related Clues:
- Third year in 31-Across's reign
- A little over half a century in old Rome
- DXX ÷ X
- Caligula's card count?
- Roman 56
- Weeks per 'annum'?
- 56, in old Rome
- Card count at Caesar's casino?
- 2018 Super Bowl number
- Year during Neros reign
- Septem × octo, alternatively
- Romans' 56
- Full deck in old Rome?
- XIX x III
- Year in the reign of Claudius