Æ 17mm diameter, weight 2.24 grams. AVT KM AVP ANTΩNEINOC His laureate head right.  Rv. MARKIANO ΠOΛIT[  ]   Bunch of grapes.  BMC—; Hunterian—; Weber—; SNG Copenhagen —; Cf. Grose/McClean 4375 for a similar coin of Diadumenian.  RPC VI online 1529.  Rare type.  Almost VF, slightly off centre

Ex David Rogers collection.