Bronze ballots used by jurors to vote on a case. These are typical of the 4th c. BCE, and similar ones were use up until the 2nd c. BCE. In this photo, note how the bottom-left ballot has a hollow axle, otherwise it is identical to the others. This insured secrecy during the voting process because, ballots being identical otherwise, it was easy for a juror to conceal the ends of the ballot with their fingers as they cast their vote for guilt or innocence.
Exhibited in the Archaeological Museum of the ancient Agora of Athens. Attica, Greece.