Coin of Agathokleia.
Obv: Queen Agagthokleia in profile.
Rev:: Greek straight bow and arrow container.
Date and Genealogy 
The traditional view, introduced by Tarn and defended as late as 1998 by Bopearachchi, is that Agathokleia was the widow of Menander I. In the civil wars after Menander's death, the Indo-Greek empire was divided, with Agathokleia and her young son Strato maintaining themselves in the eastern territories of Gandhara and Punjab.
The modern view, embraced by R. C. Senior and probably more solid since it is founded on numismatical analyses, suggests that Agathokleia was a later queen, perhaps ruling from 110 BC–100 BC or slightly later. In this case, Agathokleia was likely the widow of another king, possibly Nicias or Theophilus. In either case, Agathokleia was among the first women to rule a Hellenistic Kingdom, in the period following the reign of Alexander the Great.
Some of her subjects may have been reluctant to accept an infant king with a queen regent: unlike the Seleucid and Ptolemaic Kingdoms, almost all Indo-Greek rulers were depicted as grown men. This was probably because the kings were required to command armies, as can be seen on their coins where they are often depicted with helmets and spears. Agathokleia seems to have associated herself with Athena, the goddess of war. Athena was also the dynastic deity of the family of Menander, and Agathokleia's prominent position suggests that she was herself the daughter of a king, though she was probably too late to have been a daughter of the Bactrian king Agathocles.
The coins of Agathokleia and Strato were all bilingual, and Agathokleia's name appears more often in the Greek legend than in the Indian.
(See Strato I for details of legends.)
Most of Agathokleia's coins were struck jointly with her son Strato, though on their first issues, he is not featured on the portrait.
Silver: Bust of Agathokleia/walking king
Bust of Strato and Agathokleia conjoined/Athena Alkidemos
Bronzes: Bust of either helmeted Athena or Agathokleia as a personification of this goddess/sitting Herakles
The later king Heliokles II overstruck some of Agathokleia's coins.
|INDO-GREEK KINGS AND THEIR TERRITORIES
Based on Bopearachchi (1991)
||ARACHOSIA||GANDHARA||WESTERN PUNJAB||EASTERN PUNJAB|
|200–190 BCE||Demetrius I|
|185–170 BCE||Antimachus I|
|180–160 BCE||Apollodotus I|
|175–170 BCE||Demetrius II|
|160–155 BCE||Antimachus II|
|155–130 BCE||Menander I|
|130–120 BCE||Zoilos I||Agathokleia|
|120–110 BCE||Lysias||Strato I|
|110–100 BCE||Antialcidas||Heliokles II|
|100 BCE||Polyxenios||Demetrius III|
|90–85 BCE||Nicias||Menander II||Artemidoros|
|Yuezhi tribes||Maues (Indo-Scythian)|
|75–70 BCE||Telephos||Apollodotus II|
|55–35 BCE||Azes I (Indo-Scythian)||Zoilos II|
|25 BCE – 10 CE||Strato II & III|
See also 
- W.W. Tarn. The Greeks in Bactria and India. Third Edition. Cambridge: University Press, 1966.
- Main coins of Agathokleia