Antoninus Pius (AD 138-161), Gold Aureus, 7.3 gms., mint of Rome, struck AD 151-2, ANTONINVS AVG PIVS PP TRP XV, laureate head right, rev. LIBERALITAS VII COS IIII around Liberalitas standing left holding account-board and vexillum (RIC 207; BMC 772+ note), extremely fine and rare