Watch List notes:

Gaius Caligula. A.D. 37-41. Æ as (29 mm, 10.02 g, 6 h). Rome. C CAESAR AVG GERMANICVS PON M TR POT, bare head of Gaius Caligula left / VEST above, S C across field, Vesta seated left, holding patera in right hand, scepter in left. RIC 38; BMC 46; BN 54. Dark brown surfaces, minor smoothing. Very fine.