Watch List notes:

ANCIENT COINS, THE COLLECTION OF A CLASSICIST (PART III), Heraclius and Heraclius Constantine (AD 610-641), Æ 30-Nummi, two standing emperors, rev Λ, officina B, 5.63g, 7h (S 812). Good fine, possibly rare.
There is a suggestion that Heraclius may be carrying a sword, if so this is a very rare coin.

Estimate: £80-100