The original is composed of electrum; is yours?
Otherwise I believe this is your coin:
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[TD]Mytilene (BC 377-326) EL Hekte - B88 [/TD]
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[TR]
[TD]ca 377-326 BC. EL Hekte (2.54g). Head of Persephone with disc earring and wreath of grain right / Bull butting to left in linear square. Almost extremely fine.