Image rights: wildwinds.com
Olynthos Tetrobol.


Olynthus, Macedon, Chalcidian League, AR tetrobol, (2.32g) c. 389-380 BC,
Laureate head of Apollo left. / XALKIDEWN Cithara. 
Sear 1425. Robinson & Clement Group H, 60. 

Robinson and Clement dated their Group H c. 410-401 BC. 
Westermark, "Studies Rudi Thomsen", pp. 91-103, concluded 
that the Chalcidian League did not exist before the 
beginning of the 4th century and dated Group H to the 380s, 
the period of the League's greatest expansion.