Heraclius and Heraclius Constantine AV Solidus. 4.49 g, 22.24 mm. Constantinople mint, ca 613-616 AD. 

Obv: dd NN hERACLIUS ET hERA CONST PP AV, facing busts of 
Heraclius with short beard on left and Heraclius Constantine 
(whose bust is much smaller), beardless, on right, each 
wearing chlamys and elaborate crown with cross, cross 
between their heads.

Rev: VICTORIA AVGU and officina letter I, cross potent on three steps; I in right field.

Mintmark CONOB. 

SB 737; MOB 10; DO 10; BMC 22
Courtesy of TimeLine Originals (www.time-lines.co.uk), Nov. 2010