Watch List notes:

ROMAN EMPIRE: Caligula, 37-41 AD, AE quadrans (2.48g), Rome, RIC-39; BMC-57, struck 39 AD, pileus between S C, C CAESAR DIVI AVG PRON AVG // R. CC in center, PON M TR P III P P COS DES III, VF.

Estimate: 50-75 USD