Watch List notes:

Caligula (37-41) with Caesonia, his fourth wife (died 41 AD). AE As, Carthago Nova mint, Spain. D/ Laureate head of Caligula right. R/ Draped bust of Caesonia as Salus right; SAL-AVG across field. RPC I, 185; Burgos 613; C. 1 (Fr. 30). AE. g. 11.29 mm. 28.00 RR. Very rare. Dark green patina. Several cuts through both portraits, otherwise VF.

Defaced in antiquity, possibly an example of damnatio memoriae.