Troas, Birytis Æ10. Circa 350-300 BC. Head of Kabeiros left, wearing pileos / Upright club, P-I B-Y across fields, all within wreath. BMC 6-7 var. (reverse letters); SNG Copenhagen 250 var. (same). 1.52g, 10mm, 4h. Good Very Fine. Die-engraver's error when inscribing the city ethnic on the reverse die. From a private Norwegian collection.