Nikaia in Bithynia, 193-211 AD., Septimius Severus, Hemiassarion, unlisted.

Nikaia in Bithynia, Septimius Severus, 193-211 AD.,
Orichalcum Hemiassarion (16-17 mm / 3,58 g),
Obv.: CЄΠ CЄVH-POC AVΓ , laureate head of Septimius Severus right.
Rev.: NIKA - IEΩN , Athena standing l., holding patera and leaning on spear, shield at her feet l.
cf. Rec. Gen. 439, 326 (bigger denomination) ; Weiser - ; cf. Münzen & Medaillen Deutschland GmbH, Auction 15, 330 (ex. J.-P. Righetti coll.) http://www.coinarchives.com/a/lotviewer.php?LotID=90015&AucID=96&Lot=330 (probably same dies) .