1 Piastre - Norodom I

Cambodia's first Western-style coinage, authorized under French protectorate pressure in 1860, was struck at the Paris Mint — Norodom I had only secured his throne the previous year after a succession dispute that required direct French military intervention to resolve. The piastre denomination was explicitly pegged to align with French Indochinese trade currency, marking the effective beginning of Cambodia's monetary absorption into the colonial system.

The X# prefix in standard references signals its uncertain official status — some authorities classify it as a pattern or presentation piece rather than a circulating issue, and confirmed circulation examples are genuinely difficult to attribute with confidence.