
Front: King Bhumibol Adulyadej (Rama IX) in full military dress, sash, orders and heavy spectacles, facing left against a screen of fine engine-turned lines. The Garuda emblem sits top left; the issuer line reads รัฐบาลไทย, Government of Thailand, above the legal tender wording and ยี่สิบบาท, twenty baht. Two signatures below: the Minister of Finance and the Governor of the Bank of Thailand. Serial 9 D 4156832 in Western figures, repeated in Thai numerals at lower right.
Back: The King Taksin the Great monument at Wongwian Yai in Thonburi, rendered in grey-green: the king mounted, sword raised, with four of his generals striding forward on foot around the plinth. Thai lettering to the right names him and gives his years in the Buddhist era. Garuda in copper at top right, a blank oval reserved for the watermark beneath it, and Thai floral scrollwork framing the lower edge.
Part of Thailand's Series 12, introduced in the early 1980s and printed in very large numbers through the decade, which is why worn examples remain common. The green 20 baht was superseded in the 1990s by the Series 14 note of the same value, and later by the Series 15 design.