Kalliope and Hermaeus jointly issued silver, Indian-Standard Drachms. The obverse featured diademed and draped busts of them both. The reverse shows the king on a prancing horse, which is characteristic motif of the contemporary Greek kings in the eastern Punjab such as
Hippostratos. It has been suggested that the coin represented a marital alliance between the two dynastic lines. Coins have been found in
Peshawar and near
Mohmand. They were also part of the assemblage of the
Sarai Saleh hoard and 928 were found in the first Mir Zakah deposit. Some of these coins are found overstruck with dies in the name of
Artemidoros. == Historiography ==