The Didrachm denomination
An ancient Greek silver coin denomination with a value of 2 drachms or 1/2 tetradrachm.

It weighed around 8.6 grammes, and could feature some impressive artwork due to the relatively large flans.
Didrachm

(1) Akragas 480-470 BC
Obverse: sea eagle; AK / AЯ
Reverse: crab
Ref: Jenkins, Gela, Group IV; SNG ANS 95...
(2) Hyria (Campania) c. 405-400 BC
Obverse: head of Hera Lakinia facing slightly right, wearing necklace and polos ornamented with palmette between the foreparts of two griffins
Reverse: man-faced bull walking right YPINA (retrograde)
Ref: Rutter 134; Historia Numorum Italy ...
(3) Korkyra c. 229-48 BC
Obverse: Head of Dionysos right wearing ivy-wreath
Reverse: Pegasos; below prow right (KP) (AV) (KP)
Ref: HGC 6, 65
(4) Metapontion 400-340 BCE
Obverse: Head of Demeter right, hair bound with wreath of barley ears
Reverse: META (Barley ear)
Ref: None provided
(5) Rhodos c. 316-304 BC
Obverse: Helios head facing slightly right
Reverse: rose, grape cluster left, bud to the right; POΔION / E
Ref: Ashton, Colossus Series 1b. SNG Kec...
(6) Segesta c. 460-440 BC
Obverse: Hound standing left
Reverse: Head of the nymph Segesta right, swastika behind
Ref: SNG ANS 621 (Without Swastika); McC...
(7) Tyre c. 330-329 BC
Obverse: Bearded Melqart riding hippocamp with curled wing to right, waves and dolphin below
Reverse: Owl standing right, head facing; crook and flail behind date II (year 2) and Phoenician letter tsade in right fields
Ref: BMC Phoenicia p. 231, 29; SNG Cop 3...