Vacant See Chamberlain Cardinal Galeffi (1830), Rome, Medal, 1830, Rare, Issued by General Treasurer Mario Mattei. D: SEDE VACANTE MDCCCXXX the coat of arms of Monsignor Mario Mattei, below NIC CERBARA - R: MARIVS MATTEI RCA THESAVRARIVS GENERALIS on four lines. Opus: Nicola Cerbara. Ø 31 mm. Ae. 15,50 g, Boccia 93, XF+