Watch List notes:

MYSIA. Pergamum. Caius & Lucius, Caesars, 20 BC-AD 4 and 17 BC-AD 2. Hemiassarion (Orichalcum, 18 mm, 3.61 g, 12 h), Demophon, magistrate. Γ KAIΣAPA ΠEPΓAMHNOI Bare head of Gaius Caesar to right. Rev. Λ KAIΣAPA ΔHMOΦΩN Bare head of Lucius Caesar to right. RPC I 2365. Very rare. Sharply struck and with two exceptionally attractive portraits. The obverse struck slightly off center, otherwise, extremely fine.