Watch List notes:

EGYPT, Alexandria. Tranquillina. Augusta, AD 241-244. Potin Tetradrachm (23mm, 12.86 g, 12h). Dated RY 6 of Gordian III (AD 242/243). Draped bust right, wearing stephane / Tyche standing left, holding rudder and cornucopia; L ς (date) to upper left. Köln –; Dattari (Savio) 4840; K&G 73.28; Emmett 3462.6 (R2). Dark brown patina with traces of green and red, area of roughness on reverse. VF.