Thailand, 1962-82 AD., Rama IX, 1 Baht, KM Y 84.

Thailand, Rama IX (Phra Maha Bhumibol Adulyadej, 1946-...), dated BE 2505 (1962 AD.), struck 1962-82 AD.,
1 Baht (27 mm / 7,59 g), copper-nickel, mintage 883.086.000 ,
Obv.: ภูมิพลอดุลยเดช ริย์รัชกาลที่๙ , (King Bhumibol Adulyadej 9th King) , Thai legends, young uniformed bust of Bhumibol Adulyadej left.
Rev.: รัฐบาลไทย พ.ศ.๒๕๐๕ / หนึ่งบาท , (Thailand 2505 / one Baht) , Thai legends, coat of arms of Siam, BE-year at upper right edge.
KM Y 84 .

description of the coat of arms:
A shield in the middle, divided into three quadrants. The first quadrant depicts a mythological three-headed white elephant, or Erawan (in Hindu mythology called Airavata), the vehicle of the god Indra, the creature is set on a yellow field. This quadrant represents the Kingdom of Siam and the Thai heartland, the three heads of the elephant represents the northern, central and southern Siam. The lower left quadrant depicts a white elephant in front of a red field. This quadrant represents the Laotian suzerainty (the symbol comes for its native name "Lan Xang", land of the million elephants.). The lower lower right quadrant depicts two crossed krises (one with and one without a scabbard) on a pink field, this represents the Malay suzerainty to the south.
Above the shield is the symbol representing the Chakri Dynasty, a disc and a trident (chakra and trisula). The shield is then surrounded by the chain of the Ancient and Auspicious Order of the Nine Gems (representing Buddhism) with a chain and pendant from the Most Illustrious Order of Chula Chom Klao (featuring a portrait of King Chulalongkorn).