Watch List notes:

Gaius (Caligula). AD 37-41. Æ Sestertius (33mm, 24.72 g, 6h). Rome mint. Struck AD 37-38. Laureate head left / S • P • Q • R/ P • P/ OB CIVES / SERVATOS in four lines within oak wreath. RIC I 37. VF, brown patina, with some traces of green, somewhat rough surfaces.