Miletos in Ionia, 395-377 BC., Hekatomnos, Obol, Babelon, Traité II 87.

Miletos in Ionia (or Mylasa in Caria?), Satraps of Caria, Hekatomnos, 395-377 BC.,
Obol (1/12 stater) (8 mm / 0,94 g), Milesian standard,
Obv.: head and front leg of a roaring lion left; [E on bridge of nose].
Rev.: incuse sun ornament, a stellate pattern in square incuse.
Hecatomnus - ; SNG Copenhagen - ; SNG Kayhan 864 ; SNG Keckman 281 ; Babelon, Traité II 87 .
Very rare, only 25 specimens listed by Konuk (Koray Konuk, Ph.D. dissertation, "The Coinage of the Hekatomnids in Caria.").

Hecatomnus (also Hekatomnos; in Greek Ἑκάτoμνως; lived 4th century BC) was king or dynast of Caria in the reign of Artaxerxes II of Persia (404–358 BC.).
As part of the Achaemenid Empire, Caria in the fourth century BC. was under the rule of a family of semi-independent satraps known collectively as the Hekatomnids, named after the dynasty's founder, Hekatomnos.
As Hecatomnus was a native of Mylasa, and made that city his capital and the seat of his government: hence we find on his coins the figure of Zeus Labrandenos, represented as walking and carrying a bipennis over his shoulder, from the celebrated temple of that name near Mylasa. Though there exists some doubt about Hekatomnos' loyalty to the Achaemenids, such doubts did not prevent him being given control of Miletos, one of the most important Ionian cities, certainly his in 386 BC under the terms of the King's Peace. The clear Milesian influence on his coins suggests that Hekatomnos struck these coins there.
Born in Mylasa, Artaxerxes II appointed Hekatomnos satrap of Caria after the fall of Tissaphernes, with orders that he provide forces which would assist the Great King in his recovery of the island of Cyprus. According to Diodorus Siculus (14.98) Hekatomos was placed command of the fleet for this operation. But the operations of the war were at that time allowed to linger; and it appears that Hecatomnus himself shared in the spirit of disaffection towards Persia at that time so general; as when hostilities were at length resumed in earnest against Evagoras, he not only took no part in support of the Persian monarchy, but secretly supplied Evagoras with sums of money to raise mercenary troops. No notice, however, seems to have been taken of this act of treachery, a circumstance for which the disorganised state of the Persian monarchy will fully account: and Hecatomnus continued to hold possession of Caria in a state of virtual independence until his death. The date of this cannot be ascertained with certainty, but we learn from Isocrates that he was still ruling in 380 BCE.
He left three sons, Mausolus, Idrieus and Pixodarus – all of whom – in their turn, succeeded him in the sovereignty; and two daughters, Artemisia and Ada, who were married to their brothers Mausolus and Idrieus. Interested in Hellenic culture (though, possibly hedging his diplomatic bets), Hekatomnos sent his youngest son Pixodaros to Athens as part of a deputation; his older son was bound by xenia, or guest friendship, with Agesilaus, king of Sparta. When he died in 377 BC, Hekatomnos' son Maussollos succeeded him, soon in turn to be followed by his other sons, Hidreus and Pixodaros.