A marble head in the Montreal Museum of Fine Art. They identify him as "Cnaeus Domitius Corbulo or Caius Cassius Longinus, second half of 1st c. AD", which is interesting. Cnaeus Domitius Cobulo was a general and governor under Nero (and so fits the given date), but wasn't Caius Cassius Longinus the "lean and hungry" assassin of Julius Caesar a century earlier?Anyway, it's a striking head, and I took a couple of dozen shots of it.