Heraclius and Heraclius Constantine. AE18 half-follis. AD 610-641. 3.24 g. Thessalonica mint. 

..LIUS PP AVC, Heraclius and Heraclius Constantine standing  facing, each holding cross on globe.
Large K, ANNO to left, date GIIII (year 10) to right.

Mintmark QEC. 

Sear Byz. 830; DOC 139-145; Hahn MIB 228. This date not in Sear.

With permission of cngcoins.com, auction 355, Lot 671, July 2015.