(διώβολον; diṓbolon). Silver coin worth two oboloí (= 1/3 drachma, e.g., according to the Attic coinage standard of 1.4 g. The diobolon occasionally has a value marker (ΔΙΩ, ΔΙΟ, Δ). The Attic diṓbola bear a head of Athena on the obv. and an owl with two bodies on the rev. In Athens during the classical period the diobolon was the amount that had to be paid for visiting the theatre (θεωρικόν) or was paid to a participant in the popular assembly (ἐκκλησιαστικόν).