Watch List notes:

Augustus. 27 B.C.-A.D. 14 AE dupondiius (26.7 mm, 11.09 g, 12 h). Rome mint, struck 17 B.C. P. Licinius Stolo. AVGVSTVS / TRIBVNIC / POTEST, legend in three lines within oak wreath / P STOLO III VIR A A A F F, legend surrounding large SC; two countermarks. RIC I 347; BMCRE 197; Countermarks: Pangerl 77 (CAE, Pannonia); Pangerl 81a (P·P, Pannonia). Near EF, Some corrosion, minor detail weakness due to countermarks. Very Rare. 

Ex D. Thomas Collection; purchased from Forum Ancient Coins. 

Countermarks: CAE in oval punch, P·P in an oval punch