Watch List notes:

Gaius Caligula. A.D. 37-41. AE as (30.25 mm, 10.79 g, 7 h). Rome mint, struck A.D. 37-38. C CAESAR AVG GERMANICVS PON M TR POT, bare head left / VESTA, S-C, Vesta seated left, holding patera and scepter. RIC 38; BMCRE 46. aVF, rough.