R. C. Senior instead prefers c. 175–140 BC, and this is supported by L M Wilson[1] who also assumes from numismatical clues and portrait likeness that Demetrius II was a relative of Eucratides the Great.

Roman historian Justin names a "Demetrius, king of the Indians,"[2] who was an enemy of Eucratides the Great (reigned 172/171–145 BC).

[3] Justin's Demetrius beleaguered the warlike Eucratides with an army of 60,000 men against the latter's garrison of 300, but still — according to the probably exaggerated account — eventually was defeated.

This episode is referred to as occurring at the end of the reign of Eucratides, hence dating the death of Justin's Demetrius around 150 BC.

However, the king mentioned by Justin is not easily reconciled with the numismatic evidence, and views are divided as for how to interpret the various coinage series bearing the name Demetrius.