The Byzantine Empire coin attributed to Emperor Anastasius I (reigned 491–518 CE) is a notable example of early Byzantine bronze coinage following his major monetary reform in 498 AD. This reform introduced large bronze coins such as the follis, marked with Greek letters to indicate their denomination — most commonly an “M” (mu) representing 40 nummi—a system that standardized Byzantine copper coinage. Anastasius’ coins typically feature his profile bust on the obverse, adorned with a diadem and consular costume, symbolizing imperial power and prosperity. The reverse generally includes the denomination mark and mint information, often with Christian symbols like crosses and stars.

An “NGC Ancients” certified Anastasius I bronze coin marked as “dirty” refers to a genuine example showing natural age-related surface conditions such as toning, dirt, or patina that have not been cleaned or overly polished. Such natural patina and grime can enhance the historical authenticity and aesthetic appeal, providing a tangible connection to antiquity while preserving original surface qualities favored by many collectors. The coin’s significant size—approximately 38-40 mm diameter and a weight near 18 grams—makes it a striking piece, often admired for bold designs despite wear or surface impurities.

In summary, an NGC-certified Byzantine Anastasius I bronze coin with a “dirty” appearance is a well-preserved historic artifact showcasing early Byzantine monetary reform. Its original patina and surface conditions underscore its authenticity and survival through centuries, making it a valued item for collectors of ancient numismatics.