Nguyen Dynasty Sapekh

The most intriguing thing about the Nguyen Dynasty Sapekh is how these copper coins, despite their simple design, were cast in such enormous quantities that they flooded markets from Hanoi to the Mekong Delta, outlasting multiple emperors' reigns.

Weighing around 2 to 4 grams, depending on the era, Sapekh featured a square hole for stringing, with inscriptions in Chinese characters denoting the reign—say, Gia Long or Tu Duc. They were produced using sand molds in imperial foundries, often recycling scrap metal from worn-out pieces or foreign coins. Variations in quality were common; some show bubbles from poor casting, others crisp edges that suggest tighter oversight.

Minting likely occurred in Hue or Saigon, but records from the mid-19th century are spotty, possibly lost in colonial upheavals. We don't know exact production numbers for most years.

As for fakes, they were rampant, which kept me busy verifying authenticity over the years. Spotting a genuine one feels like finding a straight nail in a box of bent ones.