Watch List notes:

Egypt, Alexandria. Gallienus. A.D. 253-268. BI tetradrachm (21.7 mm, 9.51 g, 11 h). Alexandria mint, Struck A.D. 253-258. A K Π ΛI OV ΓAΛΛIHNOC ЄVЄVC, laureate, draped and cuirassed bust of Gallienus right / Eagle standing left, head right, wings closed, wreath in beak; L[?] in field right. Milne 4079; Emmett 4082. Near VF, casting void at 9:00 and rim split 11:00, date off-flan.

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