undetermined Greek coin

?, , ?.,
Æ Triens or Quincunx(?) (17-18 mm / 6,41 g), bronze, axes coin alignment ↑↓ (ca. 180°),
Obv.: head of Athena or Minerva l., wearing Corinthian helmet; four or five pellets above; two countermarks: circular on helmet (a head facing left?) and square behind neck (lion´s head facing left, long tongue).
Rev.: Pegasos flying l. or horseman riding.
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