1 Cash - Cảnh Hưng Thông Bảo, with number

Cảnh Hưng was the longest-reigning emperor of the restored Lê Dynasty, ruling nominally from 1740 to 1786 while actual power shifted between the Trịnh lords in the north and, eventually, the Tây Sơn rebellion that would ultimately extinguish the dynasty entirely. The sheer volume of cash types issued under his reign name is extraordinary — numismatists have catalogued well over a hundred distinct varieties, many differentiated only by reverse numerals or characters indicating the supervising mint or batch series.

The numeric reverse on this piece is the distinguishing detail that places it within Barker's 68.62 classification, separating it from the far more common unnumbered issues that flooded Vietnamese markets across these four decades.