2nd-3rd century AD. Obv: CAESAR AVG GERM P M TR POT CO legend with bare head right, ONCR before and DASC behind, imitating the basic obverse of a Caligula aureus. Rev: blundered legends around archer seated right, imitating Parthian drachm types. See RIC 1; BMC 1 for Caligula type obverses. 7.55 grams. . Property of a London gentleman. A curious piece, copying elements of both Roman Imperial and Parthian issues.