JLR 2023: On the overtype, 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.
Comment
JLR 2023: The undertype with an emperor-portrait with tall, narrow head and Victoria holding wreath fits many issues from mid-4th to mid-5th centuries.