Byzantine Empire, Heraclius (610-641 AD), bronze follis, Thessalonika mint, D. Oaks class 3, struck 627-8 AD, 5.34g
DESCRIPTION 	.
Obv: 	Facing figures of Heraclius, Heraclius Constantine 
and Martina, each holding gl. cr., partial Latin legend 
around, two crosses to sides

Rev: 	Denomination (M = 40 nummi), ANNO to left, off. B 
and Greek mint mark THES below, regnal year 18 to right, 
cross above
REFERENCE: 	SB 825, DO 148
GRADING: 	VF, side figures weaker, brown patina, scarce
ORDER INFO: 	B3094, $90
Scarcer Thessalonika issue of the "imperial family" follis, 
with above average detail (esp. obverse). The regnal year 
technically reads 19, but in the context of date sequences 
used at the officina B of this mint, it becomes obvious that 
the "G" is used to denote 5 rather the customary 6, thus 
making the present year 18.

With permission of rudnik.com, Nov. 2010