Byzantion in Thracia, 11 BC.-12 AD., Rhoemetalkes I., Æ 27, RPC 1708.

Kings of Thracia, Rhoemetalkes I., Byzantion mint, 11 BC.-12 AD.,
Dupondius(?) / Æ 27 (27-28 mm / 13,11 g), yellow bronze, irregular alignment ↑<- (ca. 220°),
Obv.: BAΣIΛE - Ω-Σ POIMHTAΛK-OY , conjoined heads of Rhoemetalkes (diademed) and his queen Pythodoris facing right; oval countermark on necks: PoIMTAΛ (Howego 636, "POIMHTAΛKOY").
Rev.: KAIΣAPOΣ ΣE - BAΣTOY , conjoined heads of Augustus (laureate) and Livia (draped) facing right, capricorn and globe before.
RPC I, 314, 1708 (9 pieces listed, 3 with this countermark) ; for countermark: Howego GIC 636 (15 listed, 9 on Augustus, 6 Augustus and Livia) ; BMC 3. 209, 1-2 ; SNG Cop. 1188-9 ; Youroukova, Ancient Thracians, 208 .