Thailand 1 Baht Coin, Rama IX Portrait

Coin/Bullion · Royal Thai Mint (Pathum Thani, Thailand). The mint operates under the Treasury Department and is renowned for precision in producing the currency of the Kingdom of Thailand.

Pattern: Rama IX Regular Circulation Issue (King Bhumibol Adulyadej)

Thailand 1 Baht Coin, Rama IX Portrait

Type

Coin/Bullion

Maker

Royal Thai Mint (Pathum Thani, Thailand). The mint operates under the Treasury Department and is renowned for precision in producing the currency of the Kingdom of Thailand.

Material

Copper-nickel (specifically 75% Copper, 25% Nickel). Note: This is an base-metal alloy and contains no actual silver despite its silver-colored appearance.

Dimensions

Diameter: 20 mm; Thickness: 1.48 mm; Weight: 3.4 grams. This is the standard small-format 1 Baht size.

Description

A standard circulating 1 Baht coin from Thailand, featuring the iconic portrait of King Bhumibol Adulyadej. Often mistaken for silver by tourists due to its bright nickel luster, it is the workhorse of the Thai economy. The design is minimalist and regal, typical of the Rama IX coinage series.

Key Features

Portrait of Rama IX looking left with eye glasses; Thai script along the perimeter; silver-colored copper-nickel composition.

Material & Composition

Copper-nickel (specifically 75% Copper, 25% Nickel). Note: This is an base-metal alloy and contains no actual silver despite its silver-colored appearance.

Finish & Decoration

Uncirculated to lightly circulated luster; features a left-facing profile portrait of King Bhumibol Adulyadej (Rama IX) in royal uniform. Reverse typically features a Thai temple (Likely Wat Phra Kaew).

Hallmarks & Stamps

Thai script indicating the monarch's name (Bhumibol Adulyadej) and title (Rama IX). Denomination is marked as '1 Baht' in Thai numerals.

Construction Details

Machine-struck/die-struck in a high-pressure minting press with a reeded (milled) edge to prevent clipping and counterfeiting.

Functional Features

Serrations on the edge (reeding) for tactile identification and security; raised rim to protect the design from surface wear.

Handle & Grip Details

None; handheld currency.

Craftsmanship Details

High-quality industrial minting; sharp detail in the hair and uniform of the King, indicative of well-maintained steel dies.

Authentication Indicators

Distinctive Thai script and portraiture; correct 20mm diameter and reeded edge finish consistent with Royal Thai Mint standards.

Origin & Manufacturing

Thailand; struck at the Royal Thai Mint. This specific design was the primary unit of currency during the late 20th century.

Era & Period

Modern Thailand (Late 20th - Early 21st Century); Rama IX era, reflecting the long-standing Thai monarchic tradition.

Age Estimate

Circa 1986–2008 based on the portrait style and coin size. The small copper-nickel 1 Baht was introduced in 1986.

Cultural Significance

In Thailand, currency featuring the King is treated with extreme respect; stepping on a coin or defacing the image is considered a criminal act of lèse-majesté.

Condition Notes

Very Good to Fine; shows light surface scratches and circulation wear consistent with pocket change. No significant corrosion or 'zinc rot'.

Value Estimate

Face value is 1 Thai Baht (approx. $0.03 USD). Collector value for a circulated specimen is negligible, though it holds sentimental value as a memento.

Care & Maintenance

No specialized silver care required as it is copper-nickel. Avoid harsh chemicals; mild soap and water can remove surface dirt.

Similar Pieces

Often confused with the larger 5 Baht or 10 Baht coins, or older silver Baht coins from the early 20th century which were actually 65-90% silver.

Interesting Facts

King Bhumibol Adulyadej was the world's longest-reigning monarch at the time of his death in 2016; his image appeared on all Thai currency for seven decades.

Identified on 5/14/2026