Thailand Set 20 50 100 baht 2018 P135 P136 P137 UNC

100 Baht - Rama X (Series 17) ND (2018). 

Front: King Vajiralongkorn in Air Force uniform. 

Back: King Rama V and King Rama VI. 

• Rava V's royal trip to Notodden, Norway, in a car driven by Sam Eyde, 
• King Rama VI riding horse, 
• founding of Thai Boy Scouts, 
• Trishula trident in Chakra on guillochés.

• Origins of the Thai state trace to the Sukhothai kingdom of the 13th century and the later Ayutthaya kingdom (14th–18th centuries). Modern Thailand begins with the Rattanakosin era founded in 1782, after Ayutthaya’s fall, when the new capital was established at Bangkok and the Chakri dynasty commenced.
• Thai monarchy (brief history) has remained continuous under the Chakri dynasty since 1782; it moved from absolute authority to constitutional rule after the 1932 revolution. The monarchy has acted as guardian of Buddhism, anchor of national symbolism, and patron of arts, architecture, and modernizing reforms across the 19th and 20th centuries.
• Thai currency (baht) evolved from the pre-modern silver tical system into a decimal baht under Rama V’s reforms. The modern baht is issued by the Bank of Thailand (founded 1942), with banknotes typically combining portraits of the reigning king with episodes from earlier reigns, state institutions, scientific achievements, and dynastic emblems such as the Trishula-in-Chakra.
• Thai alphabet developed in the 13th century from Old Khmer script. It is an abugida with 44 consonants and a tone system encoded through consonant classes, diacritics, and orthographic conventions that preserve historical sound patterns.
• Thai cuisine’s international fame rests on its balanced sweet–salty–sour–spicy palate, the integration of Chinese techniques, refinement from Bangkok’s royal court, and strong regional diversity in Isan, Lanna, Central, and Southern traditions.

• Rama V (Chulalongkorn) abolished slavery, modernized the administration, built railways and postal systems, and traveled extensively in Europe, including the visit to Notodden, Norway, where he met industrialist Sam Eyde.
  
• Sam Eyde was the Norwegian engineer and cofounder of Norsk Hydro who drove Rama V during his Notodden visit; the meeting represents Siam’s early engagement with industrial Europe.
• Rama VI (Vajiravudh) advanced Thai nationalism, modern literature, and civic identity; he founded the Thai Boy Scouts in 1911 and cultivated a modern military image represented in mounted portraits.

• Rama V in Norway — the Notodden study tour illustrating Siam’s engagement with European industry and the personal link with Sam Eyde.
  
• Rama VI on horseback — expression of military modernity, discipline, and early 20th-century national identity.
• Thai Boy Scouts — founded in 1911 by Rama VI as part of civic modernization and national-unity building.