The Octobol denomination
The octobol - eight obols - was an ancient Greek denomination struck in both silver and bronze.

The huge Ptolemaic bronze issue weighs between 80 and 96 grams, and some scholars prefer to regard these as heavy bronze drachms (usually 60-75 grams), but we follow the classification of Catherine Lorber (2011).

In silver, the octobol usually weighs between 4.5 and 5.5 grammes, depending on the standard on which it was struck.
Octobol

(1) Ptolemy II 260 - 246 BC
Obverse: Diademed head of Zeus-Ammon right
Reverse: ΒΑΣΙΛΣΩΣ ΠΤΟΛΣΜΑΙΟΥ, Eagle standing left, wings open, head right, no symbol between legs
Ref: Svoronos 412, SNG Cop 141