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) Amphipolis
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An AE Dichalkon struck 187-31 BC in Amphipolis
Obverse: draped bust of Artemis wearing stephane right; bow and quiver on shoulder

Reverse: leaping bull right; A_MΦIΠ_O // ΛITΩN

Diameter: 17 mm
Die Orientation: -
Weight: 4.6 g
No notes for this coin
AMNG 36, 43 Tf. 9,17, SNG ANS 153-154.
Greek (City Coinage)
(2) Antiochos IV
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An AE Dichalkon struck 38-72 AD in Anemurium
Obverse: diademed head right; BACIΛEΩΣ / ANTIOXOC

Reverse: diademed bust of Iotape right; ΒΑCΙΛICC // A_NEMOY

Diameter: 17 mm
Die Orientation: -
Weight: 4.2 g
No notes for this coin
Kovacs 265; RPC I 3708; AC 215.
Greek (Kingdom of Commagene)
(3) Halos
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An AE Dichalkon struck 300-200 BC in Halos
Obverse: Laureate head of Zeus right

Reverse: Phrixos on ram right, cloak flying; AΛE_Ω_N

Diameter: 12.5 mm
Die Orientation: -
Weight: 2 g
No notes for this coin
BCD Thessaly II 86.4 corr., SNG Cop 64 var., Rogers 242 var.
Greek (City Coinage)
(4) Melitaea
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An AE Dichalkon struck Late 4th cent. in Melitaea
Obverse: Laureate head of Zeus right

Reverse: Bee upwards, wings outstretched, M - [E] above, Λ - I below

Diameter: -
Die Orientation: -
Weight: 2.1 g
Reported to have been found in Bulgaria, c. 2001. VF
BCD-459, Rogers-396
Greek (City Coinage)
(5) Ptolemy III
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An AE Dichalkon struck 264-222 BC in Salamis (Cyprus)
Obverse: Head of Zeus-Ammon facing right, wearing tainia, dotted border

Reverse: ΠΤΟΛΕΜΑΙΟΥ ΒΑΣΙΛΕΩΣ, Cult statue of Aphrodite standing facing

Diameter: 17 mm
Die Orientation: 12 H
Weight: 3.26 g

Ptolemaic Kingdom

The reverse inscription translates to: "of King Ptolemy"

Svoronos 1008
Greek (Ptolemaic Kingdom)
(6) Ptolemy IV
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An AE Dichalkon struck 221-204 BC in Paphos
Obverse: diademed and draped bust of Aphrodite or Arsinoe III right

Reverse: cornucopia with fillet; ΠTOΛEMAIOY_ΒAΣIΛEΩΣ

Diameter: 11.5 mm
Die Orientation: -
Weight: 1.3 g
No notes for this coin
Svoronos 1161; SNG Copenhagen 649-650
Greek (Ptolemaic Kingdom)
(7) Ptolemy Keraunos
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An AE Dichalkon struck 281-279 BCE in Macedonia
Obverse: Laureate head of Zeus to right

Reverse: Thunderbolt; to left, uncertain monogram (NK?); to right, monogram of ΠΑΡ

Diameter: 11 mm
Die Orientation: 10 H
Weight: 1.19 g
No notes for this coin
AMNG III/2, p. 6, 38 ('Paroreia'). CPE B163. HGC 3.1, -. SNG ANS -. SNG Copenhagen -. SNG München -
Greek (Kingdom of Macedonia)
(8) Tigranes the Younger
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An AE Dichalkon struck 69-68 BC in Artaxata
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

Diameter: 15.5 mm
Die Orientation: -
Weight: 4.2 g
No notes for this coin
Kovacs 151, 3rd known?
Greek (Kingdom of Armenia)