20 Baht - Rama X Series 17; polymer

Features

Issuer	Thailand
Bank emisyjny	ธนาคารแห่งประเทศไทย
Król	Phra Vajira Klao (Rama X / Vajiralongkorn) (2016-date)
Type	Standard circulation banknotes
Years	2022-2025
Value	20 Bahts (20 บาท) 20 THB = USD 0.61
Currency	Baht (1897-date)
Composition	Polimer
Size	138 × 72 mm
Shape	Prostokątny
Issued	24 March 2022
Number	N# 317869
References	TBB# 200a Owen W. Linzmayer. The Banknote Book (4 volumes). , Thai Banknotes# TB169 Somchai Saeng-ngern; 2022. คู่มือธนบัตรไทย: ฉบับสมบูรณ์ พ.ศ. ๒๓๙๖ - ๒๕๒๕ = Thai Banknotes Catalogue (6^th Edition). Hobby International, Bangkok, Thailand. , P# P142 Standard Catalog of World Paper Money (10 volumes).

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Series: Series 17

Obverse

Zielony nadruk; wielokolorowy poddruk; czerwone numery seryjne; czarne podpisy.
Popiersie króla Vajiralongkorna w mundurze dowódcy Królewskich Tajskich Sił Powietrznych, zwrócone lekko w lewo. Po lewej stronie jego monogram "วปร" w koronie. "20" pośrodku motywu Phum khao bin po prawej stronie.
Doskonała rejestracja nadrukowanej Garudy w prawym górnym rogu. Dwa przezroczyste okienka po lewej stronie monogramów; górne ma wiele małych wytłoczonych "20"; dolne ma żółtą "20" pośrodku; z kolejną przezroczystą "20" poniżej. Konstelacje EURion w prawym górnym rogu głowy króla. Gęste, powtarzające się mikroteksty "20" w cieniu po lewej stronie szyi króla; gęste, powtarzające się mikroteksty "20" w pobliżu nominału cyfr arabskich; jednolite, powtarzające się mikroteksty "20" wzdłuż krawędzi lewej dolnej giloszy. Ukryta liczba "20" po lewej stronie ramienia króla, widoczna od lewej dolnej krawędzi. Pionowa nić zabezpieczająca z powtarzającym się napisem "20 BAHT 20 บาท" wewnątrz, po lewej stronie. Dotykowe dziesięć ukośnych pasków na lewej i prawej środkowej krawędzi; dotykowy kwiat z ośmioma pedałami ułożony jako ⠆, brajlowskie "2"; motyw Phum khao bin po prawej stronie wydrukowany w kolorze pomarańczowym jest dotykowy; portret, monogram i otaczające gilosze, napisy, nominały i dolne motywy dekoracyjne, które są wydrukowane w kolorze ciemnozielonym, są dotykowe. Automatically translated

This is an automatic translation. The original text is:

Green print; multicolour underprint; red serial numbers; black signatures.
Bust of King Vajiralongkorn, in the uniform of the commander of the Royal Thai Air Force, facing slightly left. Crowned "วปร" monograms of him to the left. '20' in centre of Phum khao bin motif at the right.
Perfect registration printed Garuda on upper right corner. Two transparent windows to the left of monograms; the upper one has multiple small embossed '20'; the lower one has yellow '20' in the center; with another transparent '20' below. EURion constellations on upper right of king's head. Dense repeating microtexts '20' in the shadow to the left of king's neck; dense repeating microtexts '20' near Arabic numerals denomination; uniline repeating microtexts '20' along the edge of leftmost bottom guillochés. Latent number '20' on the left of king's shoulder, visible from bottom-left. Vertical security thread with repeating "20 BAHT 20 บาท" inside, to the left. Tactile ten slanted bars on center-left and center-right edge; tactile eight-pedals-flower arranged as ⠆, Braille '2'; Phum khao bin motif at the right printed orange is tactile; portrait, monogram and surrounding guillochés, inscriptions, denominations and lower decoration motifs, which printed dark-green are tactile.

Scripts: Braille, tajski

Lettering:
รัฐบาลไทย
ธนบัตรเป็นเงินที่ชําระหนี้ได้ตามกฎหมาย
ยี่สิบบาท

๒๐ 　　　　　　　　 20

Reverse

Zielony nadruk; żółtawo-pomarańczowy poddruk.
Półdługa postać króla Ramy I i króla Ramy II, obaj zwróceni lekko w prawo. Wielki Pałac w lewym dolnym rogu Ramy I. Reprodukcja tajskiego muralu przedstawiającego scenę z opowieści Panji w prawym dolnym rogu króla Ramy II. Trójząb Trishula w czakrze na tle giloszów, w prawym górnym rogu króla Ramy II. Nominał cyframi arabskimi na tle giloszowym, w lewym górnym rogu; nominał cyframi tajskimi w lewym dolnym rogu.
Konstelacje EURion w lewym dolnym rogu, prawym górnym rogu i prawym dolnym rogu. Jednolite powtarzające się mikroteksty "20" ukryte w motywach tła; jednolite powtarzające się mikroteksty "20" na krawędzi giloszy otaczających oznaczenie cyframi arabskimi. Automatically translated

This is an automatic translation. The original text is:

Green print; yellowish orange underprint.
Half-length figure of King Rama I and King Rama II, both facing slightly right. Grand Palace to the lower left of Rama I. Reproduction of Thai mural of a scene from Panji tales to the lower right of King Rama II. Trishula trident in Chakra on guillochés background, to the upper right of King Rama II. Arabic numerals denomination on guillochés background, on upper-left; Thai numerals denomination on bottom-left corner.
EURion constellations on lower-left corner, top-right corner, and bottom-right corner. Uniline repeating microtexts '20' hidden in background motifs; uniline repeating microtexts '20' on the edge of guillochés surrounding Arabic numerals denomination.

Script: tajski

Lettering:
20
๒๐
การปลอมหรือแปลงธนบัตรเป็นความผิด ต้องระวางโทษตามประมวลกฎหมายอาญา

Watermark

Głowa króla Vajiralongkorna zwrócona lekko w lewo. Automatically translated

Signatures

Arkhom Termpittayapaisith (AT)	Minister Finansów
Sethaput Suthiwartnaruepu (SS)	Governor
Srettha Thavisin (ST)	Minister Finansów
Pichai Chunhavajira (PC)	Minister Finansów

Printers

Bangkok, Thailand (1969-date)
De La Rue, Sri Lanka (1986-date)

Comments

(en)

This will be like the paper type 20 Baht, but in polymer. Serial number reset; prefix restart to 0 A/ก.

Type I polymer is manufactured by De La Rue, and Type II by CCL in Australia. The best way to identify the type is looking for the very bright 20 for Type I, and much darker 20 in the clear window for Type II.

Type I (Safeguard) and Type II (Guardian)

In the below, the old ink used on the prefix and serial number in both English and Thai, is red and is non luminescent under UV light.

The newer ink, which now seems to have been adopted in all Thai notes now being issued, luminesces orange under UV.

Sig. Arkhom:
Type I old ink : Prefix 0~9 A/ก, 0 B/ข [only in a small number, 00XXXXX], 0 S,
Type I new ink : 4~9 J/ธ, 0~9 A/ธ, 0~9 B/ก, 0~9 C/ข, 0~9 D/ค, 0~3 E/ง, 4 E/ง [mixed Type II new ink], 7 A/พ [← 64XXXXX~end], 8~9 A/พ, 0 B/พ [begin~37XXXXX → | ← 428XXXX~end], 1 B/พ,2 B/พ [begin~78XXXXX → | ← 859XXXX~861XXXX], 1 S [22XXXXX~end]

Type II old ink : Prefix 0~9 B/ข, 0~9 C/ค, 0~9 D/ง, 0~9 E/จ, 0~9 F/ฉ, 0~9 G/ต, 0~9 H/ท, 0 J/ธ [mixed Type II new ink], 6 A/พ [mixed Type II new ink]
Type II new ink : 0 J/ธ [mixed Type II old ink], 1~3 J/ธ, 4 E/ง [mixed Type I new ink], 5~9 E/ง, 0 F/จ, 0~5 A/พ, 6 A/พ [mixed Type II old ink], 7 A/พ [begin~62XXXXX →], 0 B/พ [39XXXXX~422XXXX], 2 B/พ [807XXXX~852XXXX | 89XXXXX~end], 3 B/พ [begin~43XXXXX], 1 S [begin~07XXXXX]

Sig. Srettha:
Type II new ink  : 1~9 F/จ, 0~9 G/ฉ, 0~9 H/ต, 0~9 J/ท, 0 A/ท →, 3 B/พ [← 47XXXXX~end], 4 B/พ →

Many types of error are found in 0~9 A/ก and 0 S:
- Serial number Thai and Arabic mismatch (other Numbers may exist)
--- 0 A/ก 713XXXX/๗๑๔XXXX
--- 0 A/ก 714XXXX/๗๖๔XXXX
--- 1 A/ก 167XXXX/๑๖๘XXXX
--- 9 A/ก 9123XXX/๕๑๒๓XXX
--- 0 S 1746XXX/๐๗๔๖XXX
--- 0 S 1566XXX/๑๕๖๑XXX

- Missing vertical strip

--- 0 A/ก 848XXXX

--- 0 A/ก 969XXXX

- Serial number printed through reverse - 8 A/ก 5320XXX

[Sources]

https://banknotenews.com/?p=35366.
https://www.cclsecure.com/news/thai-20-baht-note-moves-to-polymer-with-ccl-secure

UV activity (365nm):

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Date	Signatures	VG	F	VF	XF	AU	UNC	References		Frequency
Undetermined
ND (2022-2024)	AT, SS	$ 0.59	$ 0.59	$ 0.67	$ 0.72	$ 1.10	$ 1.50	P# 142a Standard Catalog of World Paper Money (10 volumes).	(en) Type I (Prefix 0~9 A/ก, 0 B/ข (rare), 4~9 J/ธ, 0 A/ธ~4 E/ง, 7 A/พ~0,1,2 B/พ; see comments)	61%
ND (2022-2024)	AT, SS						$ 2.00	P# 142as Standard Catalog of World Paper Money (10 volumes).	(en) S prefix replacement; Type I Prefix 0 S, 1 S	1.8%
ND (2022-2024)	AT, SS			$ 0.73	$ 1.00	$ 1.10	$ 1.70	P# 142b Standard Catalog of World Paper Money (10 volumes).	(en) Type II; prefix 0 B/ข~3 J/ธ; 4 E/ง~0 F/จ, 0~7 A/พ; 0,2,3 B/พ; see comments	25%
ND (2022-2024)	AT, SS							P# 142bs Standard Catalog of World Paper Money (10 volumes).	(en) S prefix replacement; Type II Prefix 1 S	0.6%
ND (2024)	ST, SS				$ 0.65	$ 0.65	$ 1.50	P# 142c Standard Catalog of World Paper Money (10 volumes).	(en) Type II; prefix 1~9 F/จ →, 3~4 B/พ →	7%
ND (2024-2025)	SS, PC									0.06%

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Past sales

Pictures	Sale	Date	Version	Grade	Sold price
	Katz Auction 185 Lot 140	24 Feb 2026	Undetermined	UNC	USD 5.81 (EUR 5.00) (+ buyer's premium) The lot includes several items.
© Katz Coins Notes & Supplies Corp.
	Katz Auction 185 Lot 139	24 Feb 2026	Undetermined	UNC	Unsold The lot includes several items.
© Katz Coins Notes & Supplies Corp.