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20 Baht Series 11

Issuer Bank of Thailand
Year 1971
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Currency Baht (1897-date)
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Obverse description Log in to see details
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Protection description Portrait watermark of H.M. King Bhumibol Adulyadej facing right, visible in the watermark window
Variants P#84a(1) -
P#84a(10) -
P#84a(11) -
P#84a(12) -
P#84a(13) -
P#84a(2) -
P#84a(3) -
P#84a(4) -
P#84a(5) -
P#84a(6) -
P#84a(7) -
P#84a(8) -
P#84a(9) -
Comments

Series 11 marked a significant shift in Thai note design policy — the Bank of Thailand moved toward more overtly royalist imagery during this period as the government sought to reinforce monarchical authority amid ongoing communist insurgency in the north and northeast. Thomas De La Rue had been printing Thai currency since the 1950s, and their work on this series reflects the high-quality intaglio craftsmanship typical of their London operation at the time.

The watermark on Series 11 notes is a portrait of King Bhumibol Adulyadej, replacing the earlier elephant watermark used in previous series — a deliberate political choice, not a routine security update.

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