Watch List notes:

Gaius, called Caligula (37-41), Quadrans, Rome, AD 40-41; AE (g 3,31; mm 19; h 7); C CAESAR DIVI AVG PRON AVG, round pileus between S - C, Rv. PON M TR P IIII P P COS TERT, round R C C. RIC 52; BMCRE 64.
Good very fine - about extremely fine.