Watch List notes:

SEVERUS ALEXANDER, (A.D.222-235), AE sestertius, issued 239, Rome mint, (22.54 g), obv. laureate bust draped and cuirassed to right, around IMP ALEXANDER PIVS AVG, rev. MARS VLTOR, Mars standing left holding spear, shield, with standard resting against his right arm, S C across fields, (S.7980, RIC 638, C.167, BMC 804). Dark green patina, extremely fine, rare in this condition.