Tiberius Claudius Nero
Tiberius Claudius Nero Germanicus
Matt Kreuzer suggested an interesting proposition, the reverse image of Milne 256 is actually Claudius (note the similarity of names). In support of Matt's position: Nero's year 13 & 14 tetradrachms were almost exclusively devoted to divinities and "Tiberius" was never deified as opposed to "Claudius" and; Suetonius reported "that people ran about yelling: 'To the Tiber with Tiberius!'", not much of an endorsement for a reign that was running out for Nero. But the Alexandrians might have chosen Tiberius for just that reason. More food for thought.
Milne 256 Claudius
Curtis(1990) p. 274 coin 36