Personal Flag of King Bhumibol Adulyadej of Thailand (or Rama IX of Thailand). Depicting the Royal Cypher (Thai: ภปร: มหาภูมิพลอดุลยเดช ปรมราชาธิราช), Standing for Bhumibol Adulyadej Parama Rajadhiraja; an equivalent to Bhumibol Rex. The cypher is surmounted by the Great Crown of Victory with sun rays shining from the top. Under the crown is the Thai symbol for Om. On a yellow field, the colour of the King's Birthday; Monday.
Own work by uploader; based on:[1]
Sodacan