The Hemiobol denomination
An ancient Greek silver coin denomination with a value of 1/2 obol, or 1/12 drachm. Generally it weighs around 0,36 grams.

In Ptolemaic egypt, it was also struck in bronze.
Hemiobol
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An AE Hemiobol struck 264-256 BC in Alexandria
Obverse: head of Zeus-Ammon right with tainia

Reverse: eagle with spread wings standing on lightning; ΠΤΟΛEMAIOY ΒΑΣΙΛΕΩΣ, Θ between eagle's legs

Diameter: 19 mm
Die Orientation: -
Weight: 5.14 g
No notes for this coin
Svoronos, 469
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An AE Hemiobol struck c. 246-222 BC in Ioppe
Obverse: Diademed head of Zeus-Ammon right

Reverse: ΒΑΣΙΛΕΩΣ ΠΤΟΛΕΜΑΙΟΥ, eagle with closed wings standing left on thunderbolt, harpē to left

Diameter: 19 mm
Die Orientation: 11 H
Weight: 4 g
The mintmark to the left of the eagle on this rare bronze hemiobol of Ptolemy III is a harpē; a type of ancient Greek sword which had a sickle protrusion along one edge near the tip of the blade. Lorber explains that these coins were assigned to Ioppe by Svoronos because the harpē was the weapon of Perseus, who according to myth rescued Andromeda in the harbour of Ioppe. A fun, if slightly irrelevant fact; Ioppe is an ancient port city in Israel that is also known as ‘Jaffa’ and later became famous for it’s delicious oranges. It’s also the name of my cat.
CPE B473; SNG Copenhagen 465 (Ptolemy II)