Watch List notes:

THRACE, Mesembria. Gordian III, with Tranquillina. AD 238-244. Æ (26mm, 11.46 g, 6h). Confronted busts of Gordian right, laureate, draped, and cuirassed, and Tranquillina left, draped and wearing stephane / Serapis standing left, raising hand and holding scepter. Karyatov 133-4 (O21?/R38); cf. Varbanov 4211 (for type). Good VF, green patina.