The Investiture Ceremony of HRH Princess Maha Chakri Sirindhorn, the Princess Royal of Thailand

This article examines the Investiture Ceremony of HRH Princess Maha Chakri Sirindhorn, the Princess Royal of Thailand, held on December 5, 1977 (B.E. 2520), in conjunction with the fiftieth birthday anniversary of His Majesty King Bhumibol Adulyadej The Great. On this auspicious occasion, His Majesty graciously elevated the royal title of HRH Princess Sirindhorn to HRH Princess Maha Chakri Sirindhorn, Ratchasima Khunakon Piyachat, the Princess Royal of Thailand, in accordance with Thailand’s ancient royal traditions. In commemoration of this historic event, the Treasury Department, Ministry of Finance, issued several commemorative coins in gold, silver and cupronickel, as well as a medal with ribbon. Detailed specifications including design, sculptors, metal composition, weight, diameter, mintage and issuance date are documented. These numismatic pieces stand as enduring symbols of Thai history, royal honor and cultural heritage.