Watch List notes:

MESOPOTAMIA. Nisibis. Tranquillina, Augusta, 241-244. AE (Bronze, 15 mm, 3.92 g, 11 h), 242-244. CAB TPANK [...] Diademed and draped bust of Tranquillina to right. Rev. NE within laurel wreath. RPC VII.2 online ID 2906 (4 specimens). SNG Leypold II 2846. Very rare. Struck slightly off center, otherwise, very fine.