Watch List notes:

Heraclius, Heraclius Constantine and Heraclonas. 638-641. AE dodecanummium (20.3 mm, 8.45 g, 1 h). Alexandria mint. no legend, Heraclius in center, Heraclius Constantine on right and Heraclonas on left, standing facing, each wearing chlamys and holding globus cruciger; Heraclius and Heraclius Constantine both wear crown topped with cross, cross above head of Heraclonas / large I B; cross potent atop (Sear) monogram # 27 // AΛЄΞ. SBCV 861; DOC 197. Near VF, Somewhat rough surfaces.

Ex Leo Hamburger 1890's.

This coin comes from a large group of Roman Provincial, Byzantine and Vandalic coins which were part of Leopold Hamburger's inventory. More information on Mr. Hamburger can be found here:https://www.coinbooks.org/v20/esylum_v20n42a19.html