1 Cash - Gia Long Thông Bảo, 6 Phân

Gia Long, born Nguyễn Ánh, spent nearly two decades in flight from the Tây Sơn forces before finally consolidating control and founding the Nguyễn dynasty in 1802. The cash coinage issued in his reign name was among the first formal monetary output of a unified Vietnamese state under a single emperor — northern and southern mints had operated under competing authorities for much of the preceding century. Production ran across multiple furnaces with predictable variation in flan quality and alloy consistency, which Toda documented across several dozen die groupings.