406 BC - Athenians prevailed over Lacedaemonians and won the Battle of Arginusae.
(I am sorry to have caused a confusion concerning the orthography reform in Athens in this post. I have just checked my Grammar of Classical Greek and found out that the Athenians adopted the Ionian alphabet in 403/402 BC.)
419 fraud- also known as advance fee fraud or Nigerian letter fraud. Those annoying emails promising a share of a large sum of money if the receiver will help transfer the funds out of the country.