The Dichalkon denomination
The dichalkon is an ancient Greek bronze denomination worth 2 chalkoi.

It is roughly equivalent to a quarter obol - or 1/24th of a drachm.
Dichalkon

(1) Antiochos IV 38-72 AD
Obverse: diademed head right; BACIΛEΩΣ / ANTIOXOC
Reverse: diademed bust of Iotape right; ΒΑCΙΛICC // A_NEMOY
Ref: Kovacs 265; RPC I 3708; AC 215.
(2) Halos 300-200 BC
Obverse: Laureate head of Zeus right
Reverse: Phrixos on ram right, cloak flying; AΛE_Ω_N
Ref: BCD Thessaly II 86.4 corr., SNG Cop...
(3) Melitaea Late 4th cent.
Obverse: Laureate head of Zeus right
Reverse: Bee upwards, wings outstretched, M - [E] above, Λ - I below
Ref: BCD-459, Rogers-396
(4) Ptolemy III 264-222 BC
Obverse: Head of Zeus-Ammon facing right, wearing tainia, dotted border
Reverse: ΠΤΟΛΕΜΑΙΟΥ ΒΑΣΙΛΕΩΣ, Cult statue of Aphrodite standing facing
Ref: Svoronos 1008
(5) Tigranes the Younger 69-68 BC
Obverse: draped bust right wearing ive-pointed Armenian tiara decorated with a star between two eagles and tied with a diadem
Reverse: palm branch; BAΣIΛEΩΣ / TIΓPANOY // H__monogram
Ref: Kovacs 151, 3rd known?