Illya is a fella! His friend and disciple, Prof. Francois de Callatay, has argued that the "Aesillas" monogram on the Roman Thasians is untenable but the "Sura" of the Aesillas connection on the Thasians still stands absolutely. Look them up on, ac search, CNG research etc.
Great thread @Pavlos ! I believe that mine is of the actual Thasos style but I confess I don’t know enough about these to be sure. Some great coins shown by all. Islands off Thrace Thasos AR Tetradracm, struck ca. 140-110 BC Dia.: 29 mm Wt.: 16.58 g Obv.: Wreathed head of Dionysus, right Rev.: Hercules standing right holding club; ΣΩΤΗΡΟΣ in left field, ΗΡΑΚΛΕΟΥΣ in right field, ΘΑΣΙΟΝ in exergue. Μ to left of figure. Ref.: Thasiennes 51 Ex arnoldoe Collection
Maybe your coin is RPC I, 4128? I have one of these types, and like on yours, the date is off flan; however, I attributed mine as RPC I, 4137 because the hair curls under the ear are straight and not like on RPC I, 4128. On mine there is a very small part, just a dot, of what would be the date, but it could be anything like the top part of the letter K or Δ 25.69 mm, 14.101 g Seleucis and Pieria, Antiochia ad Orontem 30/29 BC
My Thasian, which I attributed based on the hair curls falling on the neck, don't know if that is something to take into account. I think the "real" ones have longer curls like the one of Curtisimo. 33 x 34 mm, 16.701 g Thasos, 168/167 - 148 BC, Hellenistic Period SNG Copenhagen 1039; Göbl OTA Class I; SG-1759; BMC 72; Le Rider, Thasiennes 51; HGC 6, 359; Prokopov, Silberprägung, Group X, 483; SNG Delepierre 839; Thasos CN_6163 in: Corpus Nummorum Ob.: Wreathed head of young Dionysus, r. wearing taenia and ivy wreath with five leaves and two fruits. Hair dress rolled and with two curls falling on his back. Rev.: HΡAKΛEOYΣ ΣΩTHΡOΣ ΘAΣIΩN, nude, wreathed Herakles standing l., left knee bent, holding club and lion skin draped over left arm; M in inner left field as you can see, the line where Herakles is standing is completely skewed, oh mei