Diadumenian, AE23, Sinope, Paphlagonien. Dated CY 217 (=261 AD). 

DIADVMENIANVS CAE-S, bare head right.
C I F S-IN-O-P CCLXI, Genius standing left, holding cornucopiae and 
resting left hand on column. 

Megaw SIN1, otherwise unpublished. 
  	
With permission of Numismatik Lanz Munich, from their auction 125,
Nov. 2005, lot 906. Sold for 350 Euros.