1 Tamlueng - Rama V Copper Pattern, Plain edge

Rama V ascended the throne in 1868 at age fifteen, and the early pattern coinages produced under his reign reflect Siam's deliberate push toward Western-style decimal currency — a reform driven as much by diplomatic pressure from European trading partners as by domestic monetary need. This piece predates the formal adoption of the decimal system by over a decade, placing it squarely in the experimental phase when the Royal Siamese Mint was testing both technology and political appetite for change.

The plain edge distinguishes it from reeded-edge counterparts in the pattern series. At 40.5 grams, it was never a practical circulation proposal — the weight alone signals this was a presentation or approval piece.