I kind of inadvertently acquired two coins in this auction today. Not sure how it happened but it did. Here is a wiki link that explains the two centuries of relative peace from Octavian to Marcus Aurelius announced by the first coin and consummated so to speak by the second one. https://en.wikipedia.org/wiki/Pax_Romana I have to give up 2 coins now to keep my collection at 100: Octavian, 44-27 BC. Cistophorus (Silver, 28 mm, 10.74 g, 1 h), Ephesus, 28 BC. IMP•CAESAR•DIVI•F•COS•VI•LIBERTATIS•P•R•VINDEX• Laureate head of Octavian to right. Rev. PAX Pax standing front, head to left, holding caduceus with her right hand; behind her, a snake emerging from cista mystica; all within laurel wreath. RIC 476. RPC I 2203. Sutherland Group I. Nearly fine. From the R. Marbacher Collection, Switzerland. (Do not know about this collection- will search it up) Marcus Aurelius, as Caesar, 139-161. Sestertius (Orichalcum, 31 mm, 27.64 g, 12 h), Rome, 145. [AVRE]LIVS CAESAR AVG [PII F COS II] Bare head of Marcus Aurelius to right. Rev. [VOTA PVBLICA / S C] Faustina and Marcus Aurelius standing vis-à-vis, clasping right hands; behind them stands Concordia placing her hands on their shoulders. BMC 1786. Cohen 1022. RIC 1253a. Minor smoothing and some cleaning marks, otherwise, fine.