Justin I. Half-Follis. 518-527 AD. Antioch, 9.82 gr. 

DN IVSTIVS PP AVGS, pearl diademed, draped, cuirassed bust right (obverse somewhat doublestruck)
Large K, A over T-long cross-N over X to left, B to right. 

SB 104, DOC 50.

Courtesy of Münzen Ritter, Feb. 2010.