TYPE Roman Empire, Caligula (37-41 AD), bronze quadrans DESCRIPTION . Obv: Cap of Liberty; legend C CAESAR DIVI AVG PRON SVG S C, PNR below Rev: Legend COS TERT PON M TRP III PP around RCC REFERENCE: SR 617 GRADING: AVF, rough olive green patina w/ some encrustation ORDER INFO: R2104, $52