 The year 12 on Aristarchus's coinage indicates that his rule in Colchis continued to at least 52 or 51 BC and probably later, until c. 47 BC, when the late king Mithridates's son, Pharnaces II, took advantage of a civil war in Rome and conquered Colchis.Of the seven extant silver coins issued in the name of Aristarchus, one is located at the British Museum, Berlin, and Paris, two in the Hermitage Museum, one, unpublished, at Oxford's Ashmolean Museum, and one, in Tbilisi.The find-spot of only one of the Hermitage examples is known, near Sukhumi, and the other, near Igoeti in eastern Georgia in 2018.