ROMAN EMPIRE: Augustus & Agrippa, after 10 BC, AE dupondius (11.33g), Nemausus (Nimes), S-1730, RPC-524, back-to-back heads of Augustus & Agrippa / crocodile right, chained to palm tree, Fine. Reverse countermarked DD, with palm branch between the two letters, abbreviation of decreto decurionum ("by order of town council").
Estimate: 150-200 USD