Province Thrace
City Uncertain mint of Thrace 
Region Thrace
Reign Rhoemetalces III
Obverse inscription ΓΑΙΩ ΚΑΙΣΑΡΙ ΓΕΡΜΑΝΙ
Obverse design laureate head of Caligula, l.
Reverse inscription ΒΑΣΙΛΕΥΣ ΡΟΙΜΗΤΑΛΚΑΣ ΚΟΤΙΩΣ
Reverse design Caligula in toga seated on throne, l., giving diadem (?) to Rhoemetalces III standing in front of him

Coin no. 7 of RPC I, 1722

 

Reference CNG Triton XI, 8 Jan. 2008, lot 445
Diameter 29.2
Weight 22.69
Axis 12
External URI of the coin https://www.coinarchives.com/a/openlink.php?l=201549|265|445|dd5e461ea30a00d155d96bb60a40fc43 
Note
Addition Additional coin (post publication)