This coin, with its substantial diameter (28–30 mm) and weight (9.281 g), is consistent with large bronze issues from the late Roman Empire or early Byzantine period, particularly those minted during currency reforms in the 3rd to 5th centuries CE. The dark patina and worn surface suggest long circulation or burial, typical of coins used in frontier provinces. The presence of what may be a counterstamp—either incuse or raised—adds complexity to its identification. In Roman numismatics, counterstamps were sometimes applied to revalidate older coins, mark them for specific regions, or denote changes in value. However, some designs that resemble counterstamps were actually part of the original strike, such as mint marks, monograms, or religious symbols.
If the mark is incuse and interrupts the original design, it could be a later punch from a local authority or merchant, especially in regions where Roman coins continued to circulate post-imperially. If raised and integrated, it may represent a Chi-Rho symbol, a mint officina letter, or an emperor’s monogram—common in late imperial and early Byzantine coinage. Coins of this size and weight were often AE1 or AE2 denominations, used for higher-value transactions and frequently featuring imperial busts and Christian iconography. In today’s market, such coins range from $15 to $100 depending on clarity, rarity, and identifiable features. Your specimen, with its intriguing mark and robust flan, may merit closer inspection under angled lighting or digital enhancement to clarify its origin and function. John Lorenzo, Numismatist, USA.
