Watch List notes:

MESOPOTAMIA, Singara. Gordian III, with Tranquillina. AD 238-244. Æ (32mm, 24.40 g, 5h). Struck AD 243-4. Laureate, draped, and cuirassed bust of Gordian right vis-à-vis draped bust of Tranquillina left, wearing stephane / Tyche, draped, veiled, and turreted, seated left on rocks, holding grain ears; above, centaur Sagittarius leaping left, shooting bow; river god swimming left below. RPC VII.2 Online 3471; BMC 8-13; SNG Copenhagen 257. Brown patina, slight roughness. VF.