Watch List notes:

Egypt, Alexandria. Trajan Decius. A.D. 249-251. Potin tetradrachm (23.59 mm, 14.39 g, 11 h). Alexandria mint, Dated RY 1=A.D. 249/250. A K Γ M K TPAIANOC ΔЄKIOC, Laureate, draped and cuirassed bust of Decius right, seen from behind / Eagle standing left, wings closed, head right, wreath in beak; L - A (= RY 1 = A.D. 249/50) . Emmett 3634. VF, well-centered with pleasing surfaces. 

From the Dudley Thomas Collection; Ex Agora; Ex Gitbud & Naumann.