Watch List notes:

Lot of four billon tetradrachms of Severus Alexander, including two ex Dattari. (1) Severus Alexander as Caesar, Year [5] = 221/2 AD, 10.29g. Bare-headed, draped, cuirassed bust right / Nilus reclining left, holding reed and cornucopia from which a genius emerges to crown him; at his feet Nilometer, on which another genius is recording the height of the Nile flood; the shoulders and heads of four more genii are seen above Nilus' legs and chest. Cologne 2397. Emmett 3080/5 (R2). (2) Severus Alexander as Augustus, Year 11 = 231/2 AD, 12.20g. Bust of Alexander laureate, draped, cuirassed right, lightly bearded / Bust of Sarapis right, with kalathos on head; palm branch in right field. Cologne 2471. Dattari-Savio pl. 234, 9950 (this coin). Emmett 3133/11 (R2, citing Oxford 3077). (3) Year 13 = 233/4 AD, 12.06g. Same bust type of emperor / Bust of Alexandria right, wearing cap surmounted by towers; palm branch in right field. Cologne 2483. Emmett 3087/13 (R2). Stated to be ex Dattari, but not illustrated in Dattari-Savio. (4) Year 13 = 233/4 AD, 11.57g. Same bust type of emperor / Trophy between two seated captives, palm branch in left field. Cologne 2491. Emmett 3138/13 (common).