- DLI
- XXIX times XIX
- Half of MCII
- 551 on a monument
- Mid-6th-century date
- 551, to Nero
- 551, in stone
- Sixth-century date
- Mid sixth-century date
- 551, in old Rome
- 75 years after the fall of the Roman Empire
- 551, early on
- 552, to Ovid
- 551 at the Forum
- XIX x XXIX
- Sixth-century year
- Caesar's 551
- Mid sixth-century year
- MDCLIII ÷ III
- Ovid's 551
- Brutus' 551
- 6th-century date
- MCII halved
- 551, in Rome
- 551
- 551, to Caesar
- 551, once
- Middle of the sixth century
- Middle of the 6th century
- Sixth-century midpoint
- 551, in the Forum
- 551, in Roman numerals
- Middle of the century when the Ostrogoths left Rome
- A multiple of XXIX
- 25% of MMCCIV
- Middle of the 6th C.
- Year in reign of Justinian.
- 6th cen. date.
- Roman 551
- Year in the reign of Justinian I
- XXIX x XIX
- 551, to Claudius
- Year in the reign of Justinian
- M – CDXLIX
- MMMDCCCLVII ÷ VII
- 551, in Latium
- Year in Vigilius's papacy
- Year in Justinian I's reign
- 551, in 551
- A multiple of XIX
- Nero's 551
- Cato's 551
- Livy's 551
- 551, to an ancient Roman
- 551 at the Coliseum
- 551 to Seneca
- DC less IL
- MCIIÖII
- Year in Justinian's reign
- 551, one way
- 190% of CCXC
- XIX × XXIX
