Watch List notes:

Constantine X Ducas. 1059-1067. AE follis (27.2 mm, 8.58 g, 7 h). Anonymous, class E. Constantinople mint. Facing bust of Christ, nimbate; IC - XC to left and right / IS XS / bASILЄ / bASIL, legend in three lines, above, cross between dashes, beneath, crescent between dashes. SBCV 1855; . Rough Near VF for type, somewhat crusty, as dug.

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