JLR: Follow A. Bellinger (DOCI) in differentiating between two groups of Justinianic 1-nummus issues with large alpha/without mintmark. Those from Constantinople (527-538) are slightly larger and heavier, and show both a bolder denominational marking and more organized and even obverse portrait-legend and reverse wreath/dotted border. Those from Carthage (534-539) are slightly smaller and lighter, and show both a narrower, more attenuated denominational marking and an uneven, schematic, or blundered obverse portrait-legend and variable reverse border, sometimes just a band.
“Co 2062 (Late Roman bronze coin of Justinian I from Constantinople).” In Kenchreai Archaeological Archive, edited by J.L. Rife and S. Heath. The American Excavations at Kenchreai, 2013-2023. <http://kenchreai.org/ke/co2062>