Rhoemetalkes I, King of Thrace, and Augustus.  11 BC-12  AD. 
AE 29mm, 14.86 g.

BASILEWS ROIMHTALKOY, jugate of Rhoemetalkes and queen  
Pythodoris right.
KAISAROS SEBASTOS, jugate heads of  Augustus and Livia
right, capricorn and globe in right field.

RPC 1708.

With permission of Numismatica Ars Classica Auction 84, Lot 
1736, May 2015.

NOTE: 
RPC 1708 = Sometimes with RMAT monogram in obv field.
RPC 1709 = Always with RMAT monogram on Rhoemetalkes' neck.