Watch List notes:

Maurice Tiberius. 582-602. AE dodecanummium (15 mm, 4.19 g, 1 h). Alexandria mint. D N CONSTA - NTIN[VS PP], diademed and draped bust of Maurice right, holding cross / Large I - B divided by cross on stepped base // AΛЄΞ. SBCV 543 var. (cross on stepped base). VF, rim nick at 11:00, somewhat crusty green encrustation spots.

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